diff --git a/Dockerfile b/Dockerfile
index 74e6fecb1..521402d3d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -48,7 +48,7 @@ RUN echo 'export PATH="$RBENV_ROOT/bin:$PATH"' >> /etc/profile.d/rbenv.sh
 RUN echo 'eval "$(rbenv init -)"' >> /etc/profile.d/rbenv.sh
 RUN chmod +x /etc/profile.d/rbenv.sh
 RUN source /etc/profile.d/rbenv.sh \
-    && rbenv install 3.2.2 && rbenv global 3.2.2 && rbenv rehash \
+    && rbenv install 3.3.3 && rbenv global 3.3.3 && rbenv rehash \
     && gem install rspec rake selenium-webdriver cgi:0.3.5 && gem update bundler date && gem cleanup
 
 RUN update-alternatives --install /usr/local/bin/ruby ruby /usr/local/rbenv/shims/ruby 1