diff --git a/requirements.txt b/requirements.txt
index 9f8c683..67ae150 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,6 +5,6 @@
 pbr!=2.1.0,>=2.0.0 # Apache-2.0
 
 tempest>=17.1.0 # Apache-2.0
-cryptography!=2.0,>=1.9 # BSD/Apache-2.0
+cryptography>=2.1 # BSD/Apache-2.0
 
-oslo.config>=5.1.0 # Apache-2.0
+oslo.config>=5.2.0 # Apache-2.0