diff --git a/requirements.txt b/requirements.txt
index 45a1fa2e..8844cc99 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ WebOb>=1.6.0 # MIT
 python-ironicclient>=1.6.0 # Apache-2.0
 python-neutronclient>=5.1.0 # 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.db!=4.13.1,!=4.13.2,>=4.10.0 # Apache-2.0
 oslo.rootwrap>=5.0.0 # Apache-2.0