diff --git a/requirements.txt b/requirements.txt
index 99eca0845f..b5e3af05fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ python-neutronclient>=5.1.0 # Apache-2.0
 WebOb>=1.6.0 # MIT
 six>=1.9.0 # MIT
 stevedore>=1.17.1 # 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.i18n>=2.1.0 # Apache-2.0