diff --git a/Dockerfile b/Dockerfile
index 4160acdb..37c63310 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ WORKDIR /app
 RUN touch /etc/app-env
 
 COPY Gemfile* /app/
+RUN gem install bundler
 RUN bundle install
 
 RUN mkdir /app/log
diff --git a/Gemfile.lock b/Gemfile.lock
index c6a69059..b8e9c41b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -319,4 +319,4 @@ DEPENDENCIES
   yard
 
 BUNDLED WITH
-   1.16.4
+   2.0.1