diff --git a/src/rfc3986/_mixin.py b/src/rfc3986/_mixin.py
index d7d3589..f087af5 100644
--- a/src/rfc3986/_mixin.py
+++ b/src/rfc3986/_mixin.py
@@ -1,4 +1,5 @@
 """Module containing the implementation of the URIMixin class."""
+
 import warnings
 
 from . import exceptions as exc
diff --git a/src/rfc3986/exceptions.py b/src/rfc3986/exceptions.py
index d513ddc..45c9c8f 100644
--- a/src/rfc3986/exceptions.py
+++ b/src/rfc3986/exceptions.py
@@ -1,4 +1,5 @@
 """Exceptions module for rfc3986."""
+
 from . import compat
 
 
diff --git a/src/rfc3986/iri.py b/src/rfc3986/iri.py
index 363d6e6..573dffb 100644
--- a/src/rfc3986/iri.py
+++ b/src/rfc3986/iri.py
@@ -1,4 +1,5 @@
 """Module containing the implementation of the IRIReference class."""
+
 # Copyright (c) 2014 Rackspace
 # Copyright (c) 2015 Ian Stapleton Cordasco
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/src/rfc3986/uri.py b/src/rfc3986/uri.py
index 9fff75e..c3f6627 100644
--- a/src/rfc3986/uri.py
+++ b/src/rfc3986/uri.py
@@ -1,4 +1,5 @@
 """Module containing the implementation of the URIReference class."""
+
 # Copyright (c) 2014 Rackspace
 # Copyright (c) 2015 Ian Stapleton Cordasco
 # Licensed under the Apache License, Version 2.0 (the "License");
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 0ec7449..2bab3a1 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -1,4 +1,5 @@
 """Tests for the validators module."""
+
 import pytest
 
 import rfc3986