diff --git a/.github/workflows/test_matrix.json b/.github/workflows/test_matrix.json
index 03860eae1..e03a2482b 100644
--- a/.github/workflows/test_matrix.json
+++ b/.github/workflows/test_matrix.json
@@ -251,8 +251,7 @@
     "experimental": false,
     "trigger": [
       "schedule",
-      "workflow_dispatch",
-      "pull_request"
+      "workflow_dispatch"
     ]
   },
   {