diff --git a/src/dependency_injector/providers.c b/src/dependency_injector/providers.c
index afbd3016..db4a491b 100644
--- a/src/dependency_injector/providers.c
+++ b/src/dependency_injector/providers.c
@@ -1087,7 +1087,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_Configuration {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_Configuration *__pyx_vtabptr_19dependency_injector_9providers_Configuration;
 
 
-/* "dependency_injector/providers.pyx":770
+/* "dependency_injector/providers.pyx":775
  * 
  * 
  * cdef class Factory(Provider):             # <<<<<<<<<<<<<<
@@ -1101,7 +1101,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_Factory {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_Factory *__pyx_vtabptr_19dependency_injector_9providers_Factory;
 
 
-/* "dependency_injector/providers.pyx":1003
+/* "dependency_injector/providers.pyx":1008
  * 
  * 
  * cdef class DelegatedFactory(Factory):             # <<<<<<<<<<<<<<
@@ -1115,7 +1115,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedFactory {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedFactory *__pyx_vtabptr_19dependency_injector_9providers_DelegatedFactory;
 
 
-/* "dependency_injector/providers.pyx":1024
+/* "dependency_injector/providers.pyx":1029
  * 
  * 
  * cdef class AbstractFactory(Factory):             # <<<<<<<<<<<<<<
@@ -1129,7 +1129,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_AbstractFactory {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_AbstractFactory *__pyx_vtabptr_19dependency_injector_9providers_AbstractFactory;
 
 
-/* "dependency_injector/providers.pyx":1064
+/* "dependency_injector/providers.pyx":1069
  *                                   'to overriding provider')
  * 
  * cdef class BaseSingleton(Provider):             # <<<<<<<<<<<<<<
@@ -1143,7 +1143,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_BaseSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_BaseSingleton *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
 
 
-/* "dependency_injector/providers.pyx":1238
+/* "dependency_injector/providers.pyx":1243
  * 
  * 
  * cdef class Singleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1157,7 +1157,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_Singleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_Singleton *__pyx_vtabptr_19dependency_injector_9providers_Singleton;
 
 
-/* "dependency_injector/providers.pyx":1299
+/* "dependency_injector/providers.pyx":1304
  * 
  * 
  * cdef class DelegatedSingleton(Singleton):             # <<<<<<<<<<<<<<
@@ -1171,7 +1171,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedSingleton *__pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton;
 
 
-/* "dependency_injector/providers.pyx":1320
+/* "dependency_injector/providers.pyx":1325
  * 
  * 
  * cdef class ThreadSafeSingleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1185,7 +1185,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadSafeSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadSafeSingleton *__pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton;
 
 
-/* "dependency_injector/providers.pyx":1361
+/* "dependency_injector/providers.pyx":1366
  * 
  * 
  * cdef class DelegatedThreadSafeSingleton(ThreadSafeSingleton):             # <<<<<<<<<<<<<<
@@ -1199,7 +1199,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadSafeSing
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadSafeSingleton *__pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton;
 
 
-/* "dependency_injector/providers.pyx":1382
+/* "dependency_injector/providers.pyx":1387
  * 
  * 
  * cdef class ThreadLocalSingleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1213,7 +1213,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadLocalSingleton {
 static struct __pyx_vtabstruct_19dependency_injector_9providers_ThreadLocalSingleton *__pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton;
 
 
-/* "dependency_injector/providers.pyx":1435
+/* "dependency_injector/providers.pyx":1440
  * 
  * 
  * cdef class DelegatedThreadLocalSingleton(ThreadLocalSingleton):             # <<<<<<<<<<<<<<
@@ -1227,7 +1227,7 @@ struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadLocalSin
 static struct __pyx_vtabstruct_19dependency_injector_9providers_DelegatedThreadLocalSingleton *__pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton;
 
 
-/* "dependency_injector/providers.pyx":1456
+/* "dependency_injector/providers.pyx":1461
  * 
  * 
  * cdef class AbstractSingleton(BaseSingleton):             # <<<<<<<<<<<<<<
@@ -1878,6 +1878,7 @@ static const char __pyx_k_module[] = "__module__";
 static const char __pyx_k_name_2[] = "name";
 static const char __pyx_k_update[] = "update";
 static const char __pyx_k_address[] = "address";
+static const char __pyx_k_default[] = "default";
 static const char __pyx_k_im_func[] = "im_func";
 static const char __pyx_k_im_self[] = "im_self";
 static const char __pyx_k_provide[] = "_provide";
@@ -1974,6 +1975,7 @@ static PyObject *__pyx_kp_s_cls_object_has_no_attribute_att;
 static PyObject *__pyx_n_s_copy;
 static PyObject *__pyx_n_s_deepcopy;
 static PyObject *__pyx_n_s_deepcopy_dispatch;
+static PyObject *__pyx_n_s_default;
 static PyObject *__pyx_n_s_dependency_injector_providers;
 static PyObject *__pyx_n_s_enter;
 static PyObject *__pyx_n_s_errors;
@@ -2075,7 +2077,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_8Callable_18_provide(
 static PyObject *__pyx_pf_19dependency_injector_9providers_16AbstractCallable___call__(struct __pyx_obj_19dependency_injector_9providers_AbstractCallable *__pyx_v_self, PyObject *__pyx_v_args, PyObject *__pyx_v_kwargs); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_16AbstractCallable_2override(struct __pyx_obj_19dependency_injector_9providers_AbstractCallable *__pyx_v_self, PyObject *__pyx_v_provider); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_16AbstractCallable_4_provide(struct __pyx_obj_19dependency_injector_9providers_AbstractCallable *__pyx_v_self, PyObject *__pyx_v_args, PyObject *__pyx_v_kwargs); /* proto */
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+static int __pyx_pf_19dependency_injector_9providers_13Configuration___init__(struct __pyx_obj_19dependency_injector_9providers_Configuration *__pyx_v_self, PyObject *__pyx_v_name, PyObject *__pyx_v_default); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_13Configuration_2__deepcopy__(struct __pyx_obj_19dependency_injector_9providers_Configuration *__pyx_v_self, PyObject *__pyx_v_memo); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_13Configuration_4__str__(struct __pyx_obj_19dependency_injector_9providers_Configuration *__pyx_v_self); /* proto */
 static PyObject *__pyx_pf_19dependency_injector_9providers_13Configuration_6__getattr__(struct __pyx_obj_19dependency_injector_9providers_Configuration *__pyx_v_self, PyObject *__pyx_v_name); /* proto */
@@ -9909,29 +9911,32 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_16AbstractCallable_4_
 /* "dependency_injector/providers.pyx":670
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  * 
- *     def __init__(self, name):             # <<<<<<<<<<<<<<
+ *     def __init__(self, name, default=None):             # <<<<<<<<<<<<<<
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 /* Python wrapper */
 static int __pyx_pw_19dependency_injector_9providers_13Configuration_1__init__(PyObject *__pyx_v_self, PyObject *__pyx_args, PyObject *__pyx_kwds); /*proto*/
-static char __pyx_doc_19dependency_injector_9providers_13Configuration___init__[] = "Initializer.\n\n        :param name: Name of configuration unit.\n        :type name: str\n        ";
+static char __pyx_doc_19dependency_injector_9providers_13Configuration___init__[] = "Initializer.\n\n        :param name: Name of configuration unit.\n        :type name: str\n\n        :param default: Default values of configuration unit.\n        :type default: dict\n        ";
 #if CYTHON_COMPILING_IN_CPYTHON
 struct wrapperbase __pyx_wrapperbase_19dependency_injector_9providers_13Configuration___init__;
 #endif
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-    PyObject* values[1] = {0};
+    static PyObject **__pyx_pyargnames[] = {&__pyx_n_s_name_2,&__pyx_n_s_default,0};
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+static int __pyx_pf_19dependency_injector_9providers_13Configuration___init__(struct __pyx_obj_19dependency_injector_9providers_Configuration *__pyx_v_self, PyObject *__pyx_v_name, PyObject *__pyx_v_default) {
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-  /* "dependency_injector/providers.pyx":676
- *         :type name: str
+  /* "dependency_injector/providers.pyx":679
+ *         :type default: dict
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  *         self.__children = dict()
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-  /* "dependency_injector/providers.pyx":678
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  *         self.__value = None
  *         self.__children = dict()             # <<<<<<<<<<<<<<
- *         super(Configuration, self).__init__()
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+ * 
+ */
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   /* "dependency_injector/providers.pyx":670
  *     """
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+ *     def __init__(self, name, default=None):             # <<<<<<<<<<<<<<
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 }
 
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     }
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-  /* "dependency_injector/providers.pyx":1665
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@@ -21503,13 +21550,13 @@ static PyObject *__pyx_f_19dependency_injector_9providers_deepcopy(PyObject *__p
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-    __pyx_t_5 = PyTuple_New(2+__pyx_t_4); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 1665, __pyx_L1_error)
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@@ -21520,7 +21567,7 @@ static PyObject *__pyx_f_19dependency_injector_9providers_deepcopy(PyObject *__p
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-  __pyx_builtin_hex = __Pyx_GetBuiltinName(__pyx_n_s_hex); if (!__pyx_builtin_hex) __PYX_ERR(1, 1660, __pyx_L1_error)
+  __pyx_builtin_AttributeError = __Pyx_GetBuiltinName(__pyx_n_s_AttributeError); if (!__pyx_builtin_AttributeError) __PYX_ERR(1, 713, __pyx_L1_error)
+  __pyx_builtin_hex = __Pyx_GetBuiltinName(__pyx_n_s_hex); if (!__pyx_builtin_hex) __PYX_ERR(1, 1665, __pyx_L1_error)
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+  __pyx_tuple__11 = PyTuple_Pack(1, __pyx_kp_s_Abstract_provider_forward_provid); if (unlikely(!__pyx_tuple__11)) __PYX_ERR(1, 1066, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_tuple__11);
   __Pyx_GIVEREF(__pyx_tuple__11);
 
-  /* "dependency_injector/providers.pyx":1354
+  /* "dependency_injector/providers.pyx":1359
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+  __pyx_tuple__12 = PyTuple_Pack(3, Py_None, Py_None, Py_None); if (unlikely(!__pyx_tuple__12)) __PYX_ERR(1, 1359, __pyx_L1_error)
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@@ -25581,11 +25629,11 @@ PyMODINIT_FUNC PyInit_providers(void)
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   __pyx_type_19dependency_injector_9providers_Factory.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Factory) < 0) __PYX_ERR(1, 770, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Factory) < 0) __PYX_ERR(1, 775, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_Factory.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Factory, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 770, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Factory, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 775, __pyx_L1_error)
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@@ -25595,7 +25643,7 @@ PyMODINIT_FUNC PyInit_providers(void)
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-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractFactory) < 0) __PYX_ERR(1, 1024, __pyx_L1_error)
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   __pyx_type_19dependency_injector_9providers_BaseSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_Provider;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1064, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1069, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_BaseSingleton.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1064, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1069, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton___init__.doc = __pyx_doc_19dependency_injector_9providers_13BaseSingleton___init__;
@@ -25650,7 +25698,7 @@ PyMODINIT_FUNC PyInit_providers(void)
   #endif
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1064, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton, "__str__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1069, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton_2__str__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_13BaseSingleton_2__str__.doc = __pyx_doc_19dependency_injector_9providers_13BaseSingleton_2__str__;
@@ -25658,18 +25706,18 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_BaseSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1064, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "BaseSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1064, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_BaseSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1069, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "BaseSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_BaseSingleton) < 0) __PYX_ERR(1, 1069, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_BaseSingleton = &__pyx_type_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_Singleton = &__pyx_vtable_19dependency_injector_9providers_Singleton;
   __pyx_vtable_19dependency_injector_9providers_Singleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_Singleton.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_9Singleton__provide;
   __pyx_type_19dependency_injector_9providers_Singleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1238, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1243, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_Singleton.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1238, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1243, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_9Singleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_9Singleton___init__.doc = __pyx_doc_19dependency_injector_9providers_9Singleton___init__;
@@ -25677,26 +25725,26 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Singleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1238, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "Singleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1238, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_Singleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1243, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "Singleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_Singleton) < 0) __PYX_ERR(1, 1243, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_Singleton = &__pyx_type_19dependency_injector_9providers_Singleton;
   __pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton = &__pyx_vtable_19dependency_injector_9providers_DelegatedSingleton;
   __pyx_vtable_19dependency_injector_9providers_DelegatedSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_Singleton;
   __pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_Singleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1299, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1304, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1299, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "DelegatedSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1299, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1304, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "DelegatedSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedSingleton) < 0) __PYX_ERR(1, 1304, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedSingleton = &__pyx_type_19dependency_injector_9providers_DelegatedSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton = &__pyx_vtable_19dependency_injector_9providers_ThreadSafeSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadSafeSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadSafeSingleton.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_19ThreadSafeSingleton__provide;
   __pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1320, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1325, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1320, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1325, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_19ThreadSafeSingleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_19ThreadSafeSingleton___init__.doc = __pyx_doc_19dependency_injector_9providers_19ThreadSafeSingleton___init__;
@@ -25704,26 +25752,26 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1320, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "ThreadSafeSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1320, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1325, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "ThreadSafeSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton) < 0) __PYX_ERR(1, 1325, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton = &__pyx_type_19dependency_injector_9providers_ThreadSafeSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton = &__pyx_vtable_19dependency_injector_9providers_DelegatedThreadSafeSingleton;
   __pyx_vtable_19dependency_injector_9providers_DelegatedThreadSafeSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_ThreadSafeSingleton;
   __pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1361, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1366, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1361, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "DelegatedThreadSafeSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1361, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1366, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "DelegatedThreadSafeSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton) < 0) __PYX_ERR(1, 1366, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton = &__pyx_type_19dependency_injector_9providers_DelegatedThreadSafeSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton = &__pyx_vtable_19dependency_injector_9providers_ThreadLocalSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadLocalSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_vtable_19dependency_injector_9providers_ThreadLocalSingleton.__pyx_base.__pyx_base._provide = (PyObject *(*)(struct __pyx_obj_19dependency_injector_9providers_Provider *, PyObject *, PyObject *, int __pyx_skip_dispatch))__pyx_f_19dependency_injector_9providers_20ThreadLocalSingleton__provide;
   __pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1382, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1387, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1382, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1387, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_20ThreadLocalSingleton___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_20ThreadLocalSingleton___init__.doc = __pyx_doc_19dependency_injector_9providers_20ThreadLocalSingleton___init__;
@@ -25731,25 +25779,25 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1382, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "ThreadLocalSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1382, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1387, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "ThreadLocalSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton) < 0) __PYX_ERR(1, 1387, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_ThreadLocalSingleton = &__pyx_type_19dependency_injector_9providers_ThreadLocalSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton = &__pyx_vtable_19dependency_injector_9providers_DelegatedThreadLocalSingleton;
   __pyx_vtable_19dependency_injector_9providers_DelegatedThreadLocalSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_ThreadLocalSingleton;
   __pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_ThreadLocalSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 1435, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 1440, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_print = 0;
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 1435, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "DelegatedThreadLocalSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 1435, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 1440, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "DelegatedThreadLocalSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton) < 0) __PYX_ERR(1, 1440, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_DelegatedThreadLocalSingleton = &__pyx_type_19dependency_injector_9providers_DelegatedThreadLocalSingleton;
   __pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton = &__pyx_vtable_19dependency_injector_9providers_AbstractSingleton;
   __pyx_vtable_19dependency_injector_9providers_AbstractSingleton.__pyx_base = *__pyx_vtabptr_19dependency_injector_9providers_BaseSingleton;
   __pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_base = __pyx_ptype_19dependency_injector_9providers_BaseSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 1456, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 1461, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1456, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton, "__call__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1461, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_17AbstractSingleton___call__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_17AbstractSingleton___call__.doc = __pyx_doc_19dependency_injector_9providers_17AbstractSingleton___call__;
@@ -25757,19 +25805,19 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 1456, __pyx_L1_error)
-  if (PyObject_SetAttrString(__pyx_m, "AbstractSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 1456, __pyx_L1_error)
+  if (__Pyx_SetVtable(__pyx_type_19dependency_injector_9providers_AbstractSingleton.tp_dict, __pyx_vtabptr_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 1461, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "AbstractSingleton", (PyObject *)&__pyx_type_19dependency_injector_9providers_AbstractSingleton) < 0) __PYX_ERR(1, 1461, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_AbstractSingleton = &__pyx_type_19dependency_injector_9providers_AbstractSingleton;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 1501, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 1506, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_Injection.tp_print = 0;
-  if (PyObject_SetAttrString(__pyx_m, "Injection", (PyObject *)&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 1501, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "Injection", (PyObject *)&__pyx_type_19dependency_injector_9providers_Injection) < 0) __PYX_ERR(1, 1506, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_Injection = &__pyx_type_19dependency_injector_9providers_Injection;
   __pyx_type_19dependency_injector_9providers_PositionalInjection.tp_base = __pyx_ptype_19dependency_injector_9providers_Injection;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 1505, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 1510, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_PositionalInjection.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1505, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1510, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_19PositionalInjection___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_19PositionalInjection___init__.doc = __pyx_doc_19dependency_injector_9providers_19PositionalInjection___init__;
@@ -25777,14 +25825,14 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (PyObject_SetAttrString(__pyx_m, "PositionalInjection", (PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 1505, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "PositionalInjection", (PyObject *)&__pyx_type_19dependency_injector_9providers_PositionalInjection) < 0) __PYX_ERR(1, 1510, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_PositionalInjection = &__pyx_type_19dependency_injector_9providers_PositionalInjection;
   __pyx_type_19dependency_injector_9providers_NamedInjection.tp_base = __pyx_ptype_19dependency_injector_9providers_Injection;
-  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 1533, __pyx_L1_error)
+  if (PyType_Ready(&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 1538, __pyx_L1_error)
   __pyx_type_19dependency_injector_9providers_NamedInjection.tp_print = 0;
   #if CYTHON_COMPILING_IN_CPYTHON
   {
-    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1533, __pyx_L1_error)
+    PyObject *wrapper = PyObject_GetAttrString((PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection, "__init__"); if (unlikely(!wrapper)) __PYX_ERR(1, 1538, __pyx_L1_error)
     if (Py_TYPE(wrapper) == &PyWrapperDescr_Type) {
       __pyx_wrapperbase_19dependency_injector_9providers_14NamedInjection___init__ = *((PyWrapperDescrObject *)wrapper)->d_base;
       __pyx_wrapperbase_19dependency_injector_9providers_14NamedInjection___init__.doc = __pyx_doc_19dependency_injector_9providers_14NamedInjection___init__;
@@ -25792,7 +25840,7 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   #endif
-  if (PyObject_SetAttrString(__pyx_m, "NamedInjection", (PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 1533, __pyx_L1_error)
+  if (PyObject_SetAttrString(__pyx_m, "NamedInjection", (PyObject *)&__pyx_type_19dependency_injector_9providers_NamedInjection) < 0) __PYX_ERR(1, 1538, __pyx_L1_error)
   __pyx_ptype_19dependency_injector_9providers_NamedInjection = &__pyx_type_19dependency_injector_9providers_NamedInjection;
   /*--- Type import code ---*/
   /*--- Variable import code ---*/
@@ -26034,56 +26082,56 @@ PyMODINIT_FUNC PyInit_providers(void)
   if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedCallable->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 606, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedCallable);
 
-  /* "dependency_injector/providers.pyx":821
+  /* "dependency_injector/providers.pyx":826
  *     """
  * 
  *     provided_type = None             # <<<<<<<<<<<<<<
  * 
  *     def __init__(self, provides, *args, **kwargs):
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_Factory->tp_dict, __pyx_n_s_provided_type, Py_None) < 0) __PYX_ERR(1, 821, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_Factory->tp_dict, __pyx_n_s_provided_type, Py_None) < 0) __PYX_ERR(1, 826, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_Factory);
 
-  /* "dependency_injector/providers.pyx":1021
+  /* "dependency_injector/providers.pyx":1026
  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedFactory->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1021, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedFactory->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1026, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedFactory);
 
-  /* "dependency_injector/providers.pyx":1067
+  /* "dependency_injector/providers.pyx":1072
  *     """Base class of singleton providers."""
  * 
  *     provided_type = None             # <<<<<<<<<<<<<<
  * 
  *     def __init__(self, provides, *args, **kwargs):
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_BaseSingleton->tp_dict, __pyx_n_s_provided_type, Py_None) < 0) __PYX_ERR(1, 1067, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_BaseSingleton->tp_dict, __pyx_n_s_provided_type, Py_None) < 0) __PYX_ERR(1, 1072, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_BaseSingleton);
 
-  /* "dependency_injector/providers.pyx":1317
+  /* "dependency_injector/providers.pyx":1322
  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1317, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1322, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedSingleton);
 
-  /* "dependency_injector/providers.pyx":1323
+  /* "dependency_injector/providers.pyx":1328
  *     """Thread-safe singleton provider."""
  * 
  *     storage_lock = threading.RLock()             # <<<<<<<<<<<<<<
  *     """Storage reentrant lock.
  * 
  */
-  __pyx_t_4 = __Pyx_GetModuleGlobalName(__pyx_n_s_threading); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1323, __pyx_L1_error)
+  __pyx_t_4 = __Pyx_GetModuleGlobalName(__pyx_n_s_threading); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 1328, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_5 = __Pyx_PyObject_GetAttrStr(__pyx_t_4, __pyx_n_s_RLock); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 1323, __pyx_L1_error)
+  __pyx_t_5 = __Pyx_PyObject_GetAttrStr(__pyx_t_4, __pyx_n_s_RLock); if (unlikely(!__pyx_t_5)) __PYX_ERR(1, 1328, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_5);
   __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
   __pyx_t_4 = NULL;
@@ -26097,35 +26145,35 @@ PyMODINIT_FUNC PyInit_providers(void)
     }
   }
   if (__pyx_t_4) {
-    __pyx_t_1 = __Pyx_PyObject_CallOneArg(__pyx_t_5, __pyx_t_4); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1323, __pyx_L1_error)
+    __pyx_t_1 = __Pyx_PyObject_CallOneArg(__pyx_t_5, __pyx_t_4); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1328, __pyx_L1_error)
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
   } else {
-    __pyx_t_1 = __Pyx_PyObject_CallNoArg(__pyx_t_5); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1323, __pyx_L1_error)
+    __pyx_t_1 = __Pyx_PyObject_CallNoArg(__pyx_t_5); if (unlikely(!__pyx_t_1)) __PYX_ERR(1, 1328, __pyx_L1_error)
   }
   __Pyx_GOTREF(__pyx_t_1);
   __Pyx_DECREF(__pyx_t_5); __pyx_t_5 = 0;
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton->tp_dict, __pyx_n_s_storage_lock, __pyx_t_1) < 0) __PYX_ERR(1, 1323, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton->tp_dict, __pyx_n_s_storage_lock, __pyx_t_1) < 0) __PYX_ERR(1, 1328, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_ThreadSafeSingleton);
 
-  /* "dependency_injector/providers.pyx":1379
+  /* "dependency_injector/providers.pyx":1384
  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1379, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1384, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedThreadSafeSingleton);
 
-  /* "dependency_injector/providers.pyx":1453
+  /* "dependency_injector/providers.pyx":1458
  *     """
  * 
  *     __IS_DELEGATED__ = True             # <<<<<<<<<<<<<<
  * 
  * 
  */
-  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedThreadLocalSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1453, __pyx_L1_error)
+  if (PyDict_SetItem((PyObject *)__pyx_ptype_19dependency_injector_9providers_DelegatedThreadLocalSingleton->tp_dict, __pyx_n_s_IS_DELEGATED, Py_True) < 0) __PYX_ERR(1, 1458, __pyx_L1_error)
   PyType_Modified(__pyx_ptype_19dependency_injector_9providers_DelegatedThreadLocalSingleton);
 
   /* "dependency_injector/providers.pyx":1
diff --git a/src/dependency_injector/providers.pyx b/src/dependency_injector/providers.pyx
index 9e5f7026..350fd574 100644
--- a/src/dependency_injector/providers.pyx
+++ b/src/dependency_injector/providers.pyx
@@ -667,15 +667,20 @@ cdef class Configuration(Provider):
         print(config.section1.option2())  # 2
     """
 
-    def __init__(self, name):
+    def __init__(self, name, default=None):
         """Initializer.
 
         :param name: Name of configuration unit.
         :type name: str
+
+        :param default: Default values of configuration unit.
+        :type default: dict
         """
         self.__name = name
         self.__value = None
         self.__children = dict()
+        if default is not None:
+            self.update(default)
         super(Configuration, self).__init__()
 
     def __deepcopy__(self, memo):
diff --git a/tests/unit/providers/test_configuration.py b/tests/unit/providers/test_configuration.py
index f5611b0a..dc5b45bb 100644
--- a/tests/unit/providers/test_configuration.py
+++ b/tests/unit/providers/test_configuration.py
@@ -60,6 +60,21 @@ class ConfigTests(unittest.TestCase):
         self.assertEqual(abc(), 1)
         self.assertEqual(abd(), 2)
 
+    def test_providers_with_default_value(self):
+
+        self.config = providers.Configuration(
+            name='config', default={'a': {'b': {'c': 1, 'd': 2}}})
+
+        a = self.config.a
+        ab = self.config.a.b
+        abc = self.config.a.b.c
+        abd = self.config.a.b.d
+
+        self.assertEqual(a(), {'b': {'c': 1, 'd': 2}})
+        self.assertEqual(ab(), {'c': 1, 'd': 2})
+        self.assertEqual(abc(), 1)
+        self.assertEqual(abd(), 2)
+
     def test_value_of_undefined_option(self):
         self.assertIsNone(self.config.a())