diff --git a/setup.py b/setup.py
index 1b8d902..ca75819 100755
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 setup(
     name="canonicalwebteam.flask-base",
-    version="1.0.2",
+    version="1.0.3",
     description=(
         "Flask extension that applies common configurations"
         "to all of webteam's flask apps."
@@ -22,6 +22,7 @@
     install_requires=[
         "canonicalwebteam.yaml-responses[flask] (>=1,<2)",
         "flask (>=1,<2)",
+        "jinja2 (>=3,<3.1.0)",
         "gevent==21.12.0",
         "greenlet==1.1.2",
         "talisker[gunicorn,gevent,flask,prometheus,raven]==0.19.0",