diff --git a/test-requirements.txt b/test-requirements.txt
index f231f86..b0959bb 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -17,4 +17,4 @@ eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
 reno>=3.1.0 # Apache-2.0
 
 # Bandit security code scanner
-bandit>=1.1.0 # Apache-2.0
+bandit>=1.6.0,<1.7.0 # Apache-2.0