diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index f1cd3cd..d597133 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -17,6 +17,10 @@ jobs:
             node-version: '18.18.2' # LTS
             CODE_TEST: 'test-legacy'
 
+          - runs-on: ubuntu-latest
+            node-version: '20.9.0' # LTS
+            CODE_TEST: 'test-legacy'
+
           - runs-on: ubuntu-latest
             node-version: '20.11.1' # LTS (current)
             CODE_TEST: 'test-legacy'