diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 3ce9da47..f2cb0d49 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -20,8 +20,6 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           bundler-cache: true
-      - name: Update rubygems
-        run: gem update --system
       - name: Run linters
         run: bundle exec rubocop --parallel
       - name: Ruby security checks
diff --git a/Gemfile.lock b/Gemfile.lock
index 731ae9aa..3fc7e561 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,7 @@ GEM
     diff-lcs (1.5.0)
     drb (2.2.0)
       ruby2_keywords
-    error_highlight (0.6.0)
+    error_highlight (0.5.1)
     erubi (1.12.0)
     ffi (1.16.3)
     globalid (1.2.1)