diff --git a/requirements.txt b/requirements.txt
index 89455ee0b2..6dec7ea87f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ python-keystoneclient>=3.6.0 # Apache-2.0
 keystonemiddleware!=4.5.0,>=4.2.0 # Apache-2.0
 oslo.cache>=1.5.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # Apache-2.0
-oslo.config>=3.14.0 # Apache-2.0
+oslo.config!=3.18.0,>=3.14.0 # Apache-2.0
 oslo.context>=2.9.0 # Apache-2.0
 oslo.messaging>=5.2.0 # Apache-2.0
 oslo.db!=4.13.1,!=4.13.2,>=4.10.0 # Apache-2.0