diff --git a/Dockerfile b/Dockerfile
index b4552c301..a121895a7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,6 +8,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends cron
 RUN install-php-extensions \
         mysqli \
         zip \
+	redis \
         gd; \
     \
     a2enmod rewrite; \