diff --git a/Dockerfile b/Dockerfile
index 932f07a..30b31fc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -21,6 +21,7 @@ RUN adduser -h /var/lib/matrix-synapse -u 2222 -D -G matrix-synapse matrix-synap
 RUN apk add --no-cache \
     python3 \
     py3-psycopg2 \
+    py3-jinja2 \
     libffi \
     openssl \
     zlib \