diff --git a/requirements.txt b/requirements.txt
index 0bad2cca1..c1bd6e978 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ keystonemiddleware>=4.12.0 # Apache-2.0
 lxml!=3.7.0,>=2.3 # BSD
 oslo.concurrency>=3.8.0 # Apache-2.0
 oslo.cache>=1.5.0 # Apache-2.0
-oslo.config>=4.0.0 # Apache-2.0
+oslo.config!=4.3.0,!=4.4.0,>=4.0.0 # Apache-2.0
 oslo.context>=2.14.0 # Apache-2.0
 oslo.db>=4.21.1 # Apache-2.0
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0