diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f97453c..5097113 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -41,6 +41,8 @@ jobs:
           gemfile: rails_4.2
         - ruby: truffleruby
           gemfile: rails_4.2_mongoid_5
+        - ruby: truffleruby
+          gemfile: rails_5.2
         redis-version: [6]
         mongodb-version: [5]
         allow_failures: