diff --git a/requirements.txt b/requirements.txt
index caed2a7..cf4e036 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ argparse
 Babel>=1.3
 iso8601>=0.1.9
 netaddr>=0.7.12
-oslo.config>=1.6.0  # Apache-2.0
+oslo.config>=1.9.0  # Apache-2.0
 oslo.i18n>=1.3.0  # Apache-2.0
 oslo.serialization>=1.2.0               # Apache-2.0
 oslo.utils>=1.2.0                       # Apache-2.0