diff --git a/Dockerfile b/Dockerfile
index 53feb0d..acae943 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
-FROM ruby:2.6.6
+FROM ruby:3
 
 LABEL "name"="Publish to Rubygems"
-LABEL "version"="1.0.0"
+LABEL "version"="1.1.0"
 
 LABEL "com.github.actions.name"="Publish to Rubygems"
 LABEL "com.github.actions.icon"="upload"
@@ -12,6 +12,8 @@ ENV LC_ALL C.UTF-8
 ENV LANG en_US.UTF-8
 ENV LANGUAGE en_US.UTF-8
 
+RUN gem install bundler
+
 ADD entrypoint.sh /entrypoint.sh
 
 ENTRYPOINT ["/entrypoint.sh"]