diff --git a/requirements.txt b/requirements.txt
index 6de9f4e..70c84fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=2.0.0,!=2.1.0  # Apache-2.0
+oslotest>=1.10.0  # Apache-2.0
+tempest>=17.1.0  # Apache-2.0
+tenacity>=3.2.1  # Apache-2.0