diff --git a/dependency_injector/containers.py b/dependency_injector/containers.py
index da794a88..debd80df 100644
--- a/dependency_injector/containers.py
+++ b/dependency_injector/containers.py
@@ -1,4 +1,4 @@
-"""IoC containers module."""
+"""Dependency injector IoC containers module."""
 
 import six
 
diff --git a/dependency_injector/errors.py b/dependency_injector/errors.py
index 992cdae9..69aa283e 100644
--- a/dependency_injector/errors.py
+++ b/dependency_injector/errors.py
@@ -1,4 +1,4 @@
-"""Errors module."""
+"""Dependency injector errors module."""
 
 
 class Error(Exception):
diff --git a/dependency_injector/injections.py b/dependency_injector/injections.py
index 149d91d8..84ba1f0a 100644
--- a/dependency_injector/injections.py
+++ b/dependency_injector/injections.py
@@ -1,4 +1,4 @@
-"""Injections module."""
+"""Dependency injector injections module."""
 
 import six
 
diff --git a/dependency_injector/utils.py b/dependency_injector/utils.py
index 0b596b49..f113bb71 100644
--- a/dependency_injector/utils.py
+++ b/dependency_injector/utils.py
@@ -1,4 +1,4 @@
-"""Utils module."""
+"""Dependency injector utils module."""
 
 import sys
 import copy as _copy