diff --git a/Dockerfile b/Dockerfile
index 19a786e4..b632f1de 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,7 @@ ENV WORK_DIR /opt/crawlab
 
 # install pkg
 RUN apt-get update
-RUN apt-get install -y curl git net-tools iputils-ping ntp
+RUN apt-get install -y curl git net-tools iputils-ping ntp gnupg2
 
 # install mongodb
 RUN apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 9DA31620334BD75D9DCB49F368818C72E52529D4