diff --git a/requirements.txt b/requirements.txt
index 1a146a219d..4de6ed5dce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Jinja2>=2.8 # BSD License (3 clause)
 gitdb>=0.6.4 # BSD License (3 clause)
 GitPython>=1.0.1 # BSD License (3 clause)
 six>=1.9.0 # MIT
-oslo.config>=3.14.0 # Apache-2.0
+oslo.config!=3.18.0,>=3.14.0 # Apache-2.0
 setuptools!=24.0.0,>=16.0 # PSF/ZPL
 pycrypto>=2.6 # Public Domain
 netaddr!=0.7.16,>=0.7.13 # BSD