diff --git a/dev-support/docker/Dockerfile b/dev-support/docker/Dockerfile
index cc1efc1d30c..da673f76bdd 100644
--- a/dev-support/docker/Dockerfile
+++ b/dev-support/docker/Dockerfile
@@ -35,7 +35,7 @@ RUN apt-get -q update && apt-get -q install --no-install-recommends -y \
        shellcheck \
        wget \
        && \
-    gem install rake rubocop ruby-lint
+    gem install --no-document rake rubocop ruby-lint
 
 ENV FINDBUGS_HOME /usr