diff --git a/requirements.txt b/requirements.txt
index 4bbc6a9e3..6f35144fa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ pbr>=1.6
 python-ironicclient>=0.8.0
 python-keystoneclient!=1.8.0,>=1.6.0
 python-swiftclient>=2.2.0
-oslo.config>=2.3.0 # Apache-2.0
+oslo.config>=2.6.0 # Apache-2.0
 oslo.db>=3.0.0 # Apache-2.0
 oslo.i18n>=1.5.0 # Apache-2.0
 oslo.log>=1.8.0 # Apache-2.0