diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index bb2f25f9..12e8371e 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -9,6 +9,6 @@ jobs:
   ci:
     uses: ray-di/.github/.github/workflows/continuous-integration.yml@next_stable
     with:
-      old_stable: '["8.0", "8.1"]
+      old_stable: '["8.0", "8.1"]'
       current_stable: 8.2
       next_stable: 8.3