diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 41c814ef..cc514d8e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -45,7 +45,7 @@ jobs:
       run: |
         sudo apt-get -yqq install libpq-dev postgresql-client
         createdb que-test
-        gem install bundler
+        gem install bundler --version '~> 2.4.0'
         bundle install --jobs 4 --retry 3
         USE_RAILS=true bundle exec rake test
         bundle exec rake test