diff --git a/requirements.txt b/requirements.txt
index b62088d80..7d19c6ecb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ eventlet!=0.18.3,>=0.18.2 # MIT
 jsonschema!=2.5.0,<3.0.0,>=2.0.0 # MIT
 oslo.config>=3.22.0 # Apache-2.0
 oslo.context>=2.12.0 # Apache-2.0
-oslo.db>=4.19.0  # Apache-2.0
+oslo.db>=4.19.0 # Apache-2.0
 oslo.i18n>=2.1.0 # Apache-2.0
 oslo.messaging>=5.19.0 # Apache-2.0
 oslo.middleware>=3.10.0 # Apache-2.0