diff --git a/requirements.txt b/requirements.txt
index 9842e16dd01..e38790492de 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,6 +27,7 @@ oslo.config>=1.9.0  # Apache-2.0
 oslo.context>=0.2.0                     # Apache-2.0
 oslo.db>=1.5.0  # Apache-2.0
 oslo.i18n>=1.3.0  # Apache-2.0
+oslo.log>=0.4.0 # Apache-2.0
 oslo.messaging>=1.6.0  # Apache-2.0
 oslo.middleware>=0.3.0                  # Apache-2.0
 oslo.rootwrap>=1.5.0  # Apache-2.0