diff --git a/README.rst b/README.rst
index af647892..adc590d8 100644
--- a/README.rst
+++ b/README.rst
@@ -77,40 +77,40 @@ Key features of the ``Dependency Injector``:
 
 .. code-block:: python
 
-    from dependency_injector import containers, providers
-    from dependency_injector.wiring import Provide
+   from dependency_injector import containers, providers
+   from dependency_injector.wiring import Provide
 
 
-    class Container(containers.DeclarativeContainer):
+   class Container(containers.DeclarativeContainer):
 
-        config = providers.Configuration()
+       config = providers.Configuration()
 
-        api_client = providers.Singleton(
-            ApiClient,
-            api_key=config.api_key,
-            timeout=config.timeout.as_int(),
-        )
+       api_client = providers.Singleton(
+           ApiClient,
+           api_key=config.api_key,
+           timeout=config.timeout.as_int(),
+       )
 
-        service = providers.Factory(
-            Service,
-            api_client=api_client,
-        )
+       service = providers.Factory(
+           Service,
+           api_client=api_client,
+       )
 
 
-    def main(service: Service = Provide[Container.service]):
-        ...
+   def main(service: Service = Provide[Container.service]):
+       ...
 
 
-    if __name__ == '__main__':
-        container = Container()
-        container.config.api_key.from_env('API_KEY')
-        container.config.timeout.from_env('TIMEOUT')
-        container.wire(modules=[sys.modules[__name__]])
+   if __name__ == '__main__':
+       container = Container()
+       container.config.api_key.from_env('API_KEY')
+       container.config.timeout.from_env('TIMEOUT')
+       container.wire(modules=[sys.modules[__name__]])
 
-        main()  # <-- dependency is injected automatically
+       main()  # <-- dependency is injected automatically
 
-        with container.api_client.override(mock.Mock()):
-            main()  # <-- overridden dependency is injected automatically
+       with container.api_client.override(mock.Mock()):
+           main()  # <-- overridden dependency is injected automatically
 
 When you call ``main()`` function the ``Service`` dependency is assembled and injected automatically.
 
diff --git a/docs/index.rst b/docs/index.rst
index 1db8c7e8..06b9ebd5 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -85,40 +85,40 @@ Key features of the ``Dependency Injector``:
 
 .. code-block:: python
 
-    from dependency_injector import containers, providers
-    from dependency_injector.wiring import Provide
+   from dependency_injector import containers, providers
+   from dependency_injector.wiring import Provide
 
 
-    class Container(containers.DeclarativeContainer):
+   class Container(containers.DeclarativeContainer):
 
-        config = providers.Configuration()
+       config = providers.Configuration()
 
-        api_client = providers.Singleton(
-            ApiClient,
-            api_key=config.api_key,
-            timeout=config.timeout.as_int(),
-        )
+       api_client = providers.Singleton(
+           ApiClient,
+           api_key=config.api_key,
+           timeout=config.timeout.as_int(),
+       )
 
-        service = providers.Factory(
-            Service,
-            api_client=api_client,
-        )
+       service = providers.Factory(
+           Service,
+           api_client=api_client,
+       )
 
 
-    def main(service: Service = Provide[Container.service]):
-        ...
+   def main(service: Service = Provide[Container.service]):
+       ...
 
 
-    if __name__ == '__main__':
-        container = Container()
-        container.config.api_key.from_env('API_KEY')
-        container.config.timeout.from_env('TIMEOUT')
-        container.wire(modules=[sys.modules[__name__]])
+   if __name__ == '__main__':
+       container = Container()
+       container.config.api_key.from_env('API_KEY')
+       container.config.timeout.from_env('TIMEOUT')
+       container.wire(modules=[sys.modules[__name__]])
 
-        main()  # <-- dependency is injected automatically
+       main()  # <-- dependency is injected automatically
 
-        with container.api_client.override(mock.Mock()):
-            main()  # <-- overridden dependency is injected automatically
+       with container.api_client.override(mock.Mock()):
+           main()  # <-- overridden dependency is injected automatically
 
 With the ``Dependency Injector`` objects assembling is consolidated in the container.
 Dependency injections are defined explicitly.