diff --git a/requirements.txt b/requirements.txt
index 46fdab191a..ee4e67cacc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,7 @@ eventlet!=0.18.3,!=0.20.1,<0.21.0,>=0.18.2 # MIT
 greenlet>=0.3.2 # MIT
 lxml!=3.7.0,>=2.3 # BSD
 netaddr!=0.7.16,>=0.7.13 # BSD
-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