diff --git a/.github/workflows/test_unreleased.yml b/.github/workflows/test_unreleased.yml
index 3d3dc1c..a347c9a 100644
--- a/.github/workflows/test_unreleased.yml
+++ b/.github/workflows/test_unreleased.yml
@@ -17,7 +17,6 @@ jobs:
         entry:
           - { ruby_version: '3.1', opensearch_ref: '1.x' }
           - { ruby_version: '3.1', opensearch_ref: '2.x' }
-          - { ruby_version: '3.1', opensearch_ref: '2.0' }
           - { ruby_version: '3.1', opensearch_ref: 'main' }
 
     steps: