diff --git a/test-requirements.txt b/test-requirements.txt
index a25b901dd..cde81436b 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -13,3 +13,4 @@ sphinxcontrib-httpdomain # BSD
 stestr>=2.0.0 # Apache-2.0
 testtools>=1.4.0 # MIT
 setuptools!=50.0.0
+jinja2<3.1.0