diff --git a/README.rst b/README.rst
index 45dae861..4af89beb 100644
--- a/README.rst
+++ b/README.rst
@@ -78,7 +78,7 @@ Key features of the ``Dependency Injector``:
 .. code-block:: python
 
    from dependency_injector import containers, providers
-   from dependency_injector.wiring import Provide
+   from dependency_injector.wiring import inject, Provide
 
 
    class Container(containers.DeclarativeContainer):
@@ -97,6 +97,7 @@ Key features of the ``Dependency Injector``:
        )
 
 
+   @inject
    def main(service: Service = Provide[Container.service]):
        ...
 
diff --git a/docs/index.rst b/docs/index.rst
index f3056cf5..f45e2472 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -85,7 +85,7 @@ Key features of the ``Dependency Injector``:
 .. code-block:: python
 
    from dependency_injector import containers, providers
-   from dependency_injector.wiring import Provide
+   from dependency_injector.wiring import inject, Provide
 
 
    class Container(containers.DeclarativeContainer):
@@ -104,6 +104,7 @@ Key features of the ``Dependency Injector``:
        )
 
 
+   @inject
    def main(service: Service = Provide[Container.service]):
        ...
 
diff --git a/docs/introduction/di_in_python.rst b/docs/introduction/di_in_python.rst
index 702056b7..e7a5f81e 100644
--- a/docs/introduction/di_in_python.rst
+++ b/docs/introduction/di_in_python.rst
@@ -162,7 +162,7 @@ the dependency.
 .. code-block:: python
 
    from dependency_injector import containers, providers
-   from dependency_injector.wiring import Provide
+   from dependency_injector.wiring import inject, Provide
 
 
    class Container(containers.DeclarativeContainer):
@@ -181,6 +181,7 @@ the dependency.
        )
 
 
+   @inject
    def main(service: Service = Provide[Container.service]):
        ...
 
diff --git a/examples/demo/with_di.py b/examples/demo/with_di.py
index 9fb5218f..094fdf52 100644
--- a/examples/demo/with_di.py
+++ b/examples/demo/with_di.py
@@ -2,7 +2,7 @@ import sys
 from unittest import mock
 
 from dependency_injector import containers, providers
-from dependency_injector.wiring import Provide
+from dependency_injector.wiring import inject, Provide
 
 from after import ApiClient, Service
 
@@ -23,6 +23,7 @@ class Container(containers.DeclarativeContainer):
     )
 
 
+@inject
 def main(service: Service = Provide[Container.service]):
     ...