diff --git a/docker/Dockerfile b/docker/Dockerfile
index ec9a450..8c85db1 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -21,7 +21,7 @@
 RUN apk add ca-certificates wget su-exec git
 
 # get gitbucket
-RUN wget https://github.com/gitbucket/gitbucket/releases/download/4.19.3/gitbucket.war -O $GITBUCKET_HOME/latest.war
+RUN wget https://github.com/gitbucket/gitbucket/releases/download/4.20.0/gitbucket.war -O $GITBUCKET_HOME/latest.war
 
 # clean
 RUN apk del wget