diff --git a/docker/Dockerfile b/docker/Dockerfile
index 0f88542..0560b6b 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -32,7 +32,7 @@
 RUN mkdir $GITBUCKET_HOME/plugins
 
 # get backup plugin
-RUN wget https://github.com/jyuch/gitbucket-backup-plugin/releases/download/1.2.3/gitbucket-backup-plugin-1.2.3.jar -O $GITBUCKET_HOME/gitbucket-backup-plugin-1.2.3.jar
+RUN wget https://github.com/jyuch/gitbucket-backup-plugin/releases/download/1.4.0/gitbucket-backup-plugin-1.4.0.jar -O $GITBUCKET_HOME/gitbucket-backup-plugin-1.4.0.jar
 
 # clean
 RUN apk del wget