diff --git a/Dockerfile b/Dockerfile
index 60d72b9..79842a6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,8 @@ RUN gem install bundler:1.17.2
 WORKDIR /app
 
 COPY Gemfile Gemfile.lock ./
-RUN bundle install --without development test --deployment --jobs 4
+RUN bundle lock --update && \
+    bundle install --without development test --jobs 4
 
 COPY . .