diff --git a/test-requirements.txt b/test-requirements.txt
index 24cb9fb1..936ec23b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,6 +5,6 @@ hacking>=0.9.2,<0.10
 
 coverage>=3.6
 discover
-oslotest>=1.1.0
+oslotest>=1.1.0  # Apache-2.0
 testrepository>=0.0.18
 testtools>=0.9.34