diff --git a/web/Dockerfile b/web/Dockerfile
index a3bc9ba..a9079ee 100644
--- a/web/Dockerfile
+++ b/web/Dockerfile
@@ -9,7 +9,7 @@ RUN apt-get update && \
     apt-get install -y software-properties-common && \
     apt-get install -y postfix && \
     apt-get install -y mysql-client curl gcc git gnupg-agent \
-        make python openssl redis-server sudo vim zip locales wget iproute2 supervisor
+        make python openssl redis-server sudo vim zip locales wget iproute2 supervisor cron
 
 RUN locale-gen en_US.UTF-8
 ENV LANG en_US.UTF-8