diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index b96a0c70c3..93dba995a0 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -28,6 +28,7 @@ RUN  apk add --no-cache \
         php7-xmlreader \
         php7-sodium \
         php7-redis \
+        php7-pecl-memcached \
         curl \
         wget \
         vim \
@@ -85,4 +86,4 @@ ENTRYPOINT ["/sbin/tini", "--"]
 
 CMD ["/entrypoint.sh"]
 
-EXPOSE 80
\ No newline at end of file
+EXPOSE 80