diff --git a/requirements.txt b/requirements.txt
index 0be12617..8eee3329 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ osc-lib>=1.7.0 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-keystoneauth1>=3.1.0  # Apache-2.0
+keystoneauth1>=3.1.0 # Apache-2.0
 PyYAML>=3.10.0 # MIT
 requests>=2.14.2 # Apache-2.0
 six>=1.9.0 # MIT