diff --git a/requirements.txt b/requirements.txt
index 1f5baaf..145d4ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 Babel!=2.4.0,>=2.3.4 # BSD
 oslo.i18n!=3.15.2,>=2.1.0 # 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.utils>=3.20.0 # Apache-2.0
 oslo.log>=3.22.0 # Apache-2.0
 httplib2>=0.7.5 # MIT