diff --git a/requirements.txt b/requirements.txt
index 5a26bc7f6f..9b1ca4c983 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ pecan>=0.5.0
 six>=1.7.0
 jsonpatch>=1.1
 WSME>=0.6
-Jinja2
+Jinja2>=2.6  # BSD License (3 clause)
 keystonemiddleware>=1.0.0
 oslo.messaging>=1.4.0
 retrying>=1.2.2,!=1.3.0 # Apache-2.0