diff --git a/.github/workflows/psm-interop.yaml b/.github/workflows/psm-interop.yaml
index 4ab8094e360..ddbce2fbcdb 100644
--- a/.github/workflows/psm-interop.yaml
+++ b/.github/workflows/psm-interop.yaml
@@ -5,7 +5,6 @@ on:
   push:
     branches:
       - master
-      - 'v1.*'
 
 permissions:
   contents: read