diff --git a/Dockerfile b/Dockerfile
index baa05c8c..8753182e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,6 +28,7 @@ RUN curl -L https://github.com/jwilder/dockerize/releases/download/$DOCKERIZE_VE
 WORKDIR /app
 
 COPY Gemfile Gemfile.lock /app/
+RUN gem update --system 3.2.3
 RUN gem install bundler
 RUN bundle install --without development test