diff --git a/requirements.txt b/requirements.txt
index 61f012e5..85c972f1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,8 +4,8 @@
 
 Babel!=2.4.0,>=2.3.4 # BSD
 openstacksdk>=0.9.18 # Apache-2.0
-oslo.log>=3.30.0  # Apache-2.0
+oslo.log>=3.30.0 # Apache-2.0
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 python-barbicanclient!=4.5.0,!=4.5.1,>=4.0.0 # Apache-2.0
-python-keystoneclient>=3.8.0  # Apache-2.0
-six>=1.9.0  # MIT
+python-keystoneclient>=3.8.0 # Apache-2.0
+six>=1.9.0 # MIT