diff --git a/pipelines/rails-app-testing.yml b/pipelines/rails-app-testing.yml
index 04d38d9..e2b3899 100644
--- a/pipelines/rails-app-testing.yml
+++ b/pipelines/rails-app-testing.yml
@@ -45,5 +45,5 @@ jobs:
         config:
           image_resource:
             type: registry-image
-            source: { repository: ruby, tag: 2.6 }
+            source: { repository: ruby, tag: 2.6.5 }
           << : *task-config