diff --git a/docs/main/changelog.rst b/docs/main/changelog.rst
index 2d492ec4..d8c958bc 100644
--- a/docs/main/changelog.rst
+++ b/docs/main/changelog.rst
@@ -11,7 +11,7 @@ Development version
 -------------------
 - Add ``FactoryAggregate`` provider.
 - Add support of six 1.11.0.
-- Regenerate C sources using Cython 0.27.
+- Regenerate C sources using Cython 0.27.1.
 
 3.6.1
 -----
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 38ecdc92..8a09290b 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-cython==0.27
+cython==0.27.1
 tox
 unittest2
 coverage
diff --git a/src/dependency_injector/containers.c b/src/dependency_injector/containers.c
index 37bcba23..c1c338df 100644
--- a/src/dependency_injector/containers.c
+++ b/src/dependency_injector/containers.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.27 */
+/* Generated by Cython 0.27.1 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -7,7 +7,7 @@
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_27"
+#define CYTHON_ABI "0_27_1"
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -168,7 +168,7 @@
     #define CYTHON_FAST_PYCALL 1
   #endif
   #ifndef CYTHON_PEP489_MULTI_PHASE_INIT
-    #define CYTHON_PEP489_MULTI_PHASE_INIT (PY_VERSION_HEX >= 0x03050000)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT (0 && PY_VERSION_HEX >= 0x03050000)
   #endif
   #ifndef CYTHON_USE_TP_FINALIZE
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
@@ -230,10 +230,10 @@
 #endif
 #if !CYTHON_FAST_THREAD_STATE || PY_VERSION_HEX < 0x02070000
   #define __Pyx_PyThreadState_Current PyThreadState_GET()
-#elif PY_VERSION_HEX >= 0x03050200
+#elif PY_VERSION_HEX >= 0x03060000
   #define __Pyx_PyThreadState_Current _PyThreadState_UncheckedGet()
 #elif PY_VERSION_HEX >= 0x03000000
-  #define __Pyx_PyThreadState_Current PyThreadState_Get()
+  #define __Pyx_PyThreadState_Current PyThreadState_GET()
 #else
   #define __Pyx_PyThreadState_Current _PyThreadState_Current
 #endif
@@ -701,7 +701,7 @@ bad:
 #endif /* __GNUC__ */
 static CYTHON_INLINE void __Pyx_pretend_to_initialize(void* ptr) { (void)ptr; }
 
-static PyObject *__pyx_m;
+static PyObject *__pyx_m = NULL;
 static PyObject *__pyx_d;
 static PyObject *__pyx_b;
 static PyObject *__pyx_cython_runtime;
@@ -1696,16 +1696,8 @@ static CYTHON_INLINE int __Pyx_PySequence_ContainsTF(PyObject* item, PyObject* s
 /* PyThreadStateGet.proto */
 #if CYTHON_FAST_THREAD_STATE
 #define __Pyx_PyThreadState_declare  PyThreadState *__pyx_tstate;
+#define __Pyx_PyThreadState_assign  __pyx_tstate = __Pyx_PyThreadState_Current;
 #define __Pyx_PyErr_Occurred()  __pyx_tstate->curexc_type
-#if PY_VERSION_HEX >= 0x03050000
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = _PyThreadState_UncheckedGet();
-#elif PY_VERSION_HEX >= 0x03000000
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = PyThreadState_Get();
-#elif PY_VERSION_HEX >= 0x02070000
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = _PyThreadState_Current;
-#else
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = PyThreadState_Get();
-#endif
 #else
 #define __Pyx_PyThreadState_declare
 #define __Pyx_PyThreadState_assign
@@ -6024,7 +6016,7 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_20DeclarativeContai
  * 
  *         return container
  */
-    __pyx_t_9 = PyObject_SetAttr(__pyx_v_container, __pyx_v_name, __pyx_v_provider); if (unlikely(__pyx_t_9 == -1)) __PYX_ERR(0, 266, __pyx_L1_error)
+    __pyx_t_9 = PyObject_SetAttr(__pyx_v_container, __pyx_v_name, __pyx_v_provider); if (unlikely(__pyx_t_9 == ((int)-1))) __PYX_ERR(0, 266, __pyx_L1_error)
 
     /* "dependency_injector/containers.pyx":265
  *         container.provider_type = cls.provider_type
@@ -6174,7 +6166,7 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_20DeclarativeContai
  *             raise Error('Container {0} could not be overridden '
  *                         'with itself or its subclasses'.format(cls))
  */
-  __pyx_t_1 = PyObject_IsSubclass(__pyx_v_cls, __pyx_v_overriding); if (unlikely(__pyx_t_1 == -1)) __PYX_ERR(0, 282, __pyx_L1_error)
+  __pyx_t_1 = PyObject_IsSubclass(__pyx_v_cls, __pyx_v_overriding); if (unlikely(__pyx_t_1 == ((int)-1))) __PYX_ERR(0, 282, __pyx_L1_error)
   __pyx_t_2 = (__pyx_t_1 != 0);
   if (__pyx_t_2) {
 
@@ -7956,7 +7948,7 @@ static PyObject *__pyx_pf_19dependency_injector_10containers_4copy__decorator(Py
  * 
  *         return copied_container
  */
-    __pyx_t_14 = PyObject_SetAttr(__pyx_v_copied_container, __pyx_v_name, __pyx_v_provider); if (unlikely(__pyx_t_14 == -1)) __PYX_ERR(0, 362, __pyx_L1_error)
+    __pyx_t_14 = PyObject_SetAttr(__pyx_v_copied_container, __pyx_v_name, __pyx_v_provider); if (unlikely(__pyx_t_14 == ((int)-1))) __PYX_ERR(0, 362, __pyx_L1_error)
 
     /* "dependency_injector/containers.pyx":361
  * 
@@ -8198,7 +8190,7 @@ static PyObject *__pyx_f_19dependency_injector_10containers__check_provider_type
  */
   __pyx_t_1 = __Pyx_PyObject_GetAttrStr(__pyx_v_container, __pyx_n_s_provider_type); if (unlikely(!__pyx_t_1)) __PYX_ERR(0, 380, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_1);
-  __pyx_t_2 = PyObject_IsInstance(__pyx_v_provider, __pyx_t_1); if (unlikely(__pyx_t_2 == -1)) __PYX_ERR(0, 380, __pyx_L1_error)
+  __pyx_t_2 = PyObject_IsInstance(__pyx_v_provider, __pyx_t_1); if (unlikely(__pyx_t_2 == ((int)-1))) __PYX_ERR(0, 380, __pyx_L1_error)
   __Pyx_DECREF(__pyx_t_1); __pyx_t_1 = 0;
   __pyx_t_3 = ((!(__pyx_t_2 != 0)) != 0);
   if (__pyx_t_3) {
@@ -8678,7 +8670,7 @@ static CYTHON_INLINE PyObject *__pyx_f_19dependency_injector_9providers___provid
  */
     __pyx_t_2 = __pyx_f_19dependency_injector_9providers___get_value(((struct __pyx_obj_19dependency_injector_9providers_Injection *)__pyx_v_injection)); if (unlikely(!__pyx_t_2)) __PYX_ERR(1, 213, __pyx_L1_error)
     __Pyx_GOTREF(__pyx_t_2);
-    __pyx_t_5 = __Pyx_PyList_Append(__pyx_v_positional_args, __pyx_t_2); if (unlikely(__pyx_t_5 == -1)) __PYX_ERR(1, 213, __pyx_L1_error)
+    __pyx_t_5 = __Pyx_PyList_Append(__pyx_v_positional_args, __pyx_t_2); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(1, 213, __pyx_L1_error)
     __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
   }
 
@@ -8689,7 +8681,7 @@ static CYTHON_INLINE PyObject *__pyx_f_19dependency_injector_9providers___provid
  * 
  *     return tuple(positional_args)
  */
-  __pyx_t_5 = __Pyx_PyList_Extend(__pyx_v_positional_args, __pyx_v_args); if (unlikely(__pyx_t_5 == -1)) __PYX_ERR(1, 214, __pyx_L1_error)
+  __pyx_t_5 = __Pyx_PyList_Extend(__pyx_v_positional_args, __pyx_v_args); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(1, 214, __pyx_L1_error)
 
   /* "providers.pxd":216
  *     positional_args.extend(args)
@@ -8759,7 +8751,7 @@ static CYTHON_INLINE PyObject *__pyx_f_19dependency_injector_9providers___provid
     PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
     __PYX_ERR(1, 228, __pyx_L1_error)
   }
-  __pyx_t_1 = PyDict_Size(__pyx_v_kwargs); if (unlikely(__pyx_t_1 == -1)) __PYX_ERR(1, 228, __pyx_L1_error)
+  __pyx_t_1 = PyDict_Size(__pyx_v_kwargs); if (unlikely(__pyx_t_1 == ((Py_ssize_t)-1))) __PYX_ERR(1, 228, __pyx_L1_error)
   __pyx_t_2 = ((__pyx_t_1 == 0) != 0);
   if (__pyx_t_2) {
 
@@ -9019,7 +9011,7 @@ static CYTHON_INLINE PyObject *__pyx_f_19dependency_injector_9providers___inject
  *                 __get_name(attr_injection),
  *                 __get_value(attr_injection))
  */
-    __pyx_t_5 = PyObject_SetAttr(__pyx_v_instance, __pyx_t_3, __pyx_t_4); if (unlikely(__pyx_t_5 == -1)) __PYX_ERR(1, 251, __pyx_L1_error)
+    __pyx_t_5 = PyObject_SetAttr(__pyx_v_instance, __pyx_t_3, __pyx_t_4); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(1, 251, __pyx_L1_error)
     __Pyx_DECREF(__pyx_t_3); __pyx_t_3 = 0;
     __Pyx_DECREF(__pyx_t_4); __pyx_t_4 = 0;
   }
@@ -10230,6 +10222,8 @@ static int __Pyx_copy_spec_to_module(PyObject *spec, PyObject *moddict, const ch
 }
 static PyObject* __pyx_pymod_create(PyObject *spec, CYTHON_UNUSED PyModuleDef *def) {
     PyObject *module = NULL, *moddict, *modname;
+    if (__pyx_m)
+        return __Pyx_NewRef(__pyx_m);
     modname = PyObject_GetAttrString(spec, "name");
     if (unlikely(!modname)) goto bad;
     module = PyModule_NewObject(modname);
@@ -10263,6 +10257,9 @@ static int __pyx_pymod_exec_containers(PyObject *__pyx_pyinit_module)
   PyObject *__pyx_t_9 = NULL;
   PyObject *__pyx_t_10 = NULL;
   __Pyx_RefNannyDeclarations
+  #if CYTHON_PEP489_MULTI_PHASE_INIT
+  if (__pyx_m && __pyx_m == __pyx_pyinit_module) return 0;
+  #endif
   #if CYTHON_REFNANNY
   __Pyx_RefNanny = __Pyx_RefNannyImportAPI("refnanny");
   if (!__Pyx_RefNanny) {
@@ -12266,14 +12263,18 @@ __Pyx_CyFunction_clear(__pyx_CyFunctionObject *m)
     }
     return 0;
 }
-static void __Pyx_CyFunction_dealloc(__pyx_CyFunctionObject *m)
+static void __Pyx__CyFunction_dealloc(__pyx_CyFunctionObject *m)
 {
-    PyObject_GC_UnTrack(m);
     if (__Pyx_CyFunction_weakreflist(m) != NULL)
         PyObject_ClearWeakRefs((PyObject *) m);
     __Pyx_CyFunction_clear(m);
     PyObject_GC_Del(m);
 }
+static void __Pyx_CyFunction_dealloc(__pyx_CyFunctionObject *m)
+{
+    PyObject_GC_UnTrack(m);
+    __Pyx__CyFunction_dealloc(m);
+}
 static int __Pyx_CyFunction_traverse(__pyx_CyFunctionObject *m, visitproc visit, void *arg)
 {
     Py_VISIT(m->func_closure);
@@ -12758,12 +12759,12 @@ static PyObject *__Pyx_Py3ClassCreate(PyObject *metaclass, PyObject *name, PyObj
 
 /* ClassMethod */
         static PyObject* __Pyx_Method_ClassMethod(PyObject *method) {
-#if CYTHON_COMPILING_IN_PYPY
+#if CYTHON_COMPILING_IN_PYPY && PYPY_VERSION_NUM <= 0x05080000
     if (PyObject_TypeCheck(method, &PyWrapperDescr_Type)) {
         return PyClassMethod_New(method);
     }
 #else
-#if CYTHON_COMPILING_IN_PYSTON
+#if CYTHON_COMPILING_IN_PYSTON || CYTHON_COMPILING_IN_PYPY
     if (PyMethodDescr_Check(method)) {
 #else
     static PyTypeObject *methoddescr_type = NULL;
@@ -14111,7 +14112,7 @@ static void __Pyx_Coroutine_dealloc(PyObject *self) {
         PyObject_ClearWeakRefs(self);
     if (gen->resume_label >= 0) {
         PyObject_GC_Track(self);
-#if PY_VERSION_HEX >= 0x030400a1
+#if PY_VERSION_HEX >= 0x030400a1 && CYTHON_USE_TP_FINALIZE
         if (PyObject_CallFinalizerFromDealloc(self))
 #else
         Py_TYPE(gen)->tp_del(self);
@@ -14140,7 +14141,7 @@ static void __Pyx_Coroutine_del(PyObject *self) {
     if (gen->resume_label < 0) {
         return;
     }
-#if PY_VERSION_HEX < 0x030400a1
+#if !CYTHON_USE_TP_FINALIZE
     assert(self->ob_refcnt == 0);
     self->ob_refcnt = 1;
 #endif
@@ -14208,7 +14209,7 @@ static void __Pyx_Coroutine_del(PyObject *self) {
         }
     }
     __Pyx_ErrRestore(error_type, error_value, error_traceback);
-#if PY_VERSION_HEX < 0x030400a1
+#if !CYTHON_USE_TP_FINALIZE
     assert(self->ob_refcnt > 0);
     if (--self->ob_refcnt == 0) {
         return;
@@ -14489,6 +14490,8 @@ static PyTypeObject __pyx_GeneratorType_type = {
     0,
 #if CYTHON_USE_TP_FINALIZE
     __Pyx_Coroutine_del,
+#elif PY_VERSION_HEX >= 0x030400a1
+    0,
 #endif
 };
 static int __pyx_Generator_init(void) {
diff --git a/src/dependency_injector/providers.c b/src/dependency_injector/providers.c
index 37e84ebe..a86f0411 100644
--- a/src/dependency_injector/providers.c
+++ b/src/dependency_injector/providers.c
@@ -1,4 +1,4 @@
-/* Generated by Cython 0.27 */
+/* Generated by Cython 0.27.1 */
 
 #define PY_SSIZE_T_CLEAN
 #include "Python.h"
@@ -7,7 +7,7 @@
 #elif PY_VERSION_HEX < 0x02060000 || (0x03000000 <= PY_VERSION_HEX && PY_VERSION_HEX < 0x03030000)
     #error Cython requires Python 2.6+ or Python 3.3+.
 #else
-#define CYTHON_ABI "0_27"
+#define CYTHON_ABI "0_27_1"
 #define CYTHON_FUTURE_DIVISION 0
 #include <stddef.h>
 #ifndef offsetof
@@ -168,7 +168,7 @@
     #define CYTHON_FAST_PYCALL 1
   #endif
   #ifndef CYTHON_PEP489_MULTI_PHASE_INIT
-    #define CYTHON_PEP489_MULTI_PHASE_INIT (PY_VERSION_HEX >= 0x03050000)
+    #define CYTHON_PEP489_MULTI_PHASE_INIT (0 && PY_VERSION_HEX >= 0x03050000)
   #endif
   #ifndef CYTHON_USE_TP_FINALIZE
     #define CYTHON_USE_TP_FINALIZE (PY_VERSION_HEX >= 0x030400a1)
@@ -230,10 +230,10 @@
 #endif
 #if !CYTHON_FAST_THREAD_STATE || PY_VERSION_HEX < 0x02070000
   #define __Pyx_PyThreadState_Current PyThreadState_GET()
-#elif PY_VERSION_HEX >= 0x03050200
+#elif PY_VERSION_HEX >= 0x03060000
   #define __Pyx_PyThreadState_Current _PyThreadState_UncheckedGet()
 #elif PY_VERSION_HEX >= 0x03000000
-  #define __Pyx_PyThreadState_Current PyThreadState_Get()
+  #define __Pyx_PyThreadState_Current PyThreadState_GET()
 #else
   #define __Pyx_PyThreadState_Current _PyThreadState_Current
 #endif
@@ -701,7 +701,7 @@ bad:
 #endif /* __GNUC__ */
 static CYTHON_INLINE void __Pyx_pretend_to_initialize(void* ptr) { (void)ptr; }
 
-static PyObject *__pyx_m;
+static PyObject *__pyx_m = NULL;
 static PyObject *__pyx_d;
 static PyObject *__pyx_b;
 static PyObject *__pyx_cython_runtime;
@@ -1612,16 +1612,8 @@ static CYTHON_INLINE PyObject* __Pyx_PyObject_LookupSpecial(PyObject* obj, PyObj
 /* PyThreadStateGet.proto */
 #if CYTHON_FAST_THREAD_STATE
 #define __Pyx_PyThreadState_declare  PyThreadState *__pyx_tstate;
+#define __Pyx_PyThreadState_assign  __pyx_tstate = __Pyx_PyThreadState_Current;
 #define __Pyx_PyErr_Occurred()  __pyx_tstate->curexc_type
-#if PY_VERSION_HEX >= 0x03050000
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = _PyThreadState_UncheckedGet();
-#elif PY_VERSION_HEX >= 0x03000000
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = PyThreadState_Get();
-#elif PY_VERSION_HEX >= 0x02070000
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = _PyThreadState_Current;
-#else
-  #define __Pyx_PyThreadState_assign  __pyx_tstate = PyThreadState_Get();
-#endif
 #else
 #define __Pyx_PyThreadState_declare
 #define __Pyx_PyThreadState_assign
@@ -4483,7 +4475,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_8Provider_12reset_las
             PyErr_SetString(PyExc_TypeError, "object of type 'NoneType' has no len()");
             __PYX_ERR(1, 176, __pyx_L7_error)
           }
-          __pyx_t_8 = PyTuple_GET_SIZE(__pyx_t_2); if (unlikely(__pyx_t_8 == -1)) __PYX_ERR(1, 176, __pyx_L7_error)
+          __pyx_t_8 = PyTuple_GET_SIZE(__pyx_t_2); if (unlikely(__pyx_t_8 == ((Py_ssize_t)-1))) __PYX_ERR(1, 176, __pyx_L7_error)
           __Pyx_DECREF(__pyx_t_2); __pyx_t_2 = 0;
           __pyx_t_9 = ((__pyx_t_8 == 0) != 0);
           if (__pyx_t_9) {
@@ -7949,7 +7941,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_18ExternalDependency_
  */
   __pyx_t_4 = __Pyx_PyObject_GetAttrStr(((PyObject *)__pyx_v_self), __pyx_n_s_instance_of); if (unlikely(!__pyx_t_4)) __PYX_ERR(1, 350, __pyx_L1_error)
   __Pyx_GOTREF(__pyx_t_4);
-  __pyx_t_2 = PyObject_IsInstance(__pyx_v_instance, __pyx_t_4); if (unlikely(__pyx_t_2 == -1)) __PYX_ERR(1, 350, __pyx_L1_error)
+  __pyx_t_2 = PyObject_IsInstance(__pyx_v_instance, __pyx_t_4); if (unlikely(__pyx_t_2 == ((int)-1))) __PYX_ERR(1, 350, __pyx_L1_error)
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@@ -9537,7 +9529,7 @@ static int __pyx_pf_19dependency_injector_9providers_8Callable___init__(struct _
  *             raise Error('Provider {0} expected to get callable, '
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-  __pyx_t_1 = __Pyx_PyCallable_Check(__pyx_v_provides); if (unlikely(__pyx_t_1 == -1)) __PYX_ERR(1, 458, __pyx_L1_error)
+  __pyx_t_1 = __Pyx_PyCallable_Check(__pyx_v_provides); if (unlikely(__pyx_t_1 == ((int)-1))) __PYX_ERR(1, 458, __pyx_L1_error)
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@@ -10463,7 +10455,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_8Callable_4args___get
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+    __pyx_t_4 = __Pyx_PyList_Append(__pyx_v_args, __pyx_t_1); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(1, 512, __pyx_L1_error)
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@@ -10568,7 +10560,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_8Callable_6add_args(s
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_t_2); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(1, 524, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_t_2); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(1, 524, __pyx_L1_error)
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@@ -10666,7 +10658,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_8Callable_8set_args(s
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-  __pyx_t_2 = PyTuple_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) __PYX_ERR(1, 538, __pyx_L1_error)
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@@ -10758,7 +10750,7 @@ static PyObject *__pyx_pf_19dependency_injector_9providers_8Callable_10clear_arg
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-  __pyx_t_2 = PyTuple_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_2 == -1)) __PYX_ERR(1, 547, __pyx_L1_error)
+  __pyx_t_2 = PyTuple_GET_SIZE(__pyx_t_1); if (unlikely(__pyx_t_2 == ((Py_ssize_t)-1))) __PYX_ERR(1, 547, __pyx_L1_error)
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-  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -37729,14 +37721,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Callabl
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -38802,14 +38794,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Factory
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-  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -39338,14 +39330,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Delegat
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-  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_5 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -39874,14 +39866,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Abstrac
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-  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_4 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_4 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_5 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_5 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -40387,14 +40379,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Factory
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -40901,14 +40893,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Factory
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -41415,14 +41407,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_BaseSin
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -41940,14 +41932,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Singlet
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -42465,14 +42457,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Delegat
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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@@ -43001,14 +42993,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_ThreadS
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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   __pyx_L4_bool_binop_done:;
@@ -43537,14 +43529,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Delegat
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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   __pyx_L4_bool_binop_done:;
@@ -44062,14 +44054,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_ThreadL
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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   __pyx_L4_bool_binop_done:;
@@ -44587,14 +44579,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Delegat
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-  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == -1)) __PYX_ERR(2, 11, __pyx_L1_error)
+  __pyx_t_3 = PyTuple_GET_SIZE(__pyx_v___pyx_state); if (unlikely(__pyx_t_3 == ((Py_ssize_t)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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+  __pyx_t_4 = __Pyx_HasAttr(((PyObject *)__pyx_v___pyx_result), __pyx_n_s_dict); if (unlikely(__pyx_t_4 == ((int)-1))) __PYX_ERR(2, 11, __pyx_L1_error)
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   __pyx_L4_bool_binop_done:;
@@ -45101,14 +45093,14 @@ static PyObject *__pyx_f_19dependency_injector_9providers___pyx_unpickle_Abstrac
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