diff --git a/redmine/Dockerfile b/redmine/Dockerfile
index 488d6f4b..64022360 100644
--- a/redmine/Dockerfile
+++ b/redmine/Dockerfile
@@ -1,4 +1,4 @@
-FROM redmine:3.4
+FROM redmine:3.4-passenger
 
 RUN	apt-get update && \
 	apt-get install -y --no-install-recommends \