diff --git a/.github/workflows/test_matrix.json b/.github/workflows/test_matrix.json
index 06f2689bb..8a960aeb3 100644
--- a/.github/workflows/test_matrix.json
+++ b/.github/workflows/test_matrix.json
@@ -306,6 +306,7 @@
     "backend": "dask",
     "experimental": false,
     "trigger": [
+	"pull_request",
 	"push",
 	"schedule",
       "workflow_dispatch"