diff --git a/ansiblelater/command/__init__.py b/ansiblelater/command/__init__.py
index e69de29..4ede8e6 100644
--- a/ansiblelater/command/__init__.py
+++ b/ansiblelater/command/__init__.py
@@ -0,0 +1 @@
+# noqa
diff --git a/ansiblelater/rules/__init__.py b/ansiblelater/rules/__init__.py
index e69de29..4ede8e6 100644
--- a/ansiblelater/rules/__init__.py
+++ b/ansiblelater/rules/__init__.py
@@ -0,0 +1 @@
+# noqa
diff --git a/ansiblelater/rules/ansiblefiles.py b/ansiblelater/rules/ansiblefiles.py
index 53f420a..5524266 100644
--- a/ansiblelater/rules/ansiblefiles.py
+++ b/ansiblelater/rules/ansiblefiles.py
@@ -1,3 +1,5 @@
+"""Checks related to ansible specific best practices."""
+
 import os
 import re
 from collections import defaultdict
diff --git a/ansiblelater/rules/rolefiles.py b/ansiblelater/rules/rolefiles.py
index 350ee34..a2a8df0 100644
--- a/ansiblelater/rules/rolefiles.py
+++ b/ansiblelater/rules/rolefiles.py
@@ -1,3 +1,5 @@
+"""Checks related to ansible roles files."""
+
 from nested_lookup import nested_lookup
 
 from ansiblelater.command.candidates import Error, Result
diff --git a/ansiblelater/rules/yamlfiles.py b/ansiblelater/rules/yamlfiles.py
index 6b0c4e4..ce3171f 100644
--- a/ansiblelater/rules/yamlfiles.py
+++ b/ansiblelater/rules/yamlfiles.py
@@ -1,3 +1,5 @@
+"""Checks related to generic YAML syntax (yamllint)."""
+
 import codecs
 import os
 
diff --git a/ansiblelater/utils/__init__.py b/ansiblelater/utils/__init__.py
index 2a6a599..e3999a7 100644
--- a/ansiblelater/utils/__init__.py
+++ b/ansiblelater/utils/__init__.py
@@ -1,3 +1,5 @@
+"""Global utils collection."""
+
 from __future__ import print_function
 
 import contextlib
diff --git a/ansiblelater/utils/rulehelper.py b/ansiblelater/utils/rulehelper.py
index d1c0da8..8fc306c 100644
--- a/ansiblelater/utils/rulehelper.py
+++ b/ansiblelater/utils/rulehelper.py
@@ -1,3 +1,5 @@
+"""Abstracted methods to simplify role writeup."""
+
 import codecs
 from collections import defaultdict
 
diff --git a/ansiblelater/utils/yamlhelper.py b/ansiblelater/utils/yamlhelper.py
index a4aa42e..d4ea634 100644
--- a/ansiblelater/utils/yamlhelper.py
+++ b/ansiblelater/utils/yamlhelper.py
@@ -1,3 +1,5 @@
+"""Utils for YAML file operations."""
+
 # Copyright (c) 2013-2014 Will Thames <will@thames.id.au>
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy