diff --git a/requirements.txt b/requirements.txt
index 5b299bf6d..6e0b1f65c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,6 +3,6 @@
 # process, which may cause wedges in the gate later.
 
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
-oslo.config>=4.0.0 # Apache-2.0
-keystoneauth1>=2.20.0 # Apache-2.0
+oslo.config!=4.3.0,!=4.4.0,>=4.0.0 # Apache-2.0
+keystoneauth1>=2.21.0 # Apache-2.0
 python-heatclient>=1.6.1 # Apache-2.0