diff --git a/Dockerfile b/Dockerfile
index 8d0920f3..72754bb4 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -61,6 +61,7 @@ RUN \
 	php7-ldap \
 	php7-mbstring \
 	php7-mcrypt \
+	php7-memcached \
 	php7-pcntl \
 	php7-pdo_mysql \
 	php7-pdo_pgsql \