diff --git a/requirements.txt b/requirements.txt
index 3b19c730..eef705aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ greenlet>=0.3.2 # MIT
 monotonic>=0.6 # Apache-2.0
 oslo.utils>=3.20.0 # Apache-2.0
 oslo.concurrency>=3.8.0 # 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.log>=3.22.0 # Apache-2.0
 six>=1.9.0 # MIT
 oslo.i18n!=3.15.2,>=2.1.0 # Apache-2.0