diff --git a/.github/workflows/nightly_linux_arm64.yml b/.github/workflows/nightly_linux_arm64.yml
index 4a266506e38..a0d8825b232 100644
--- a/.github/workflows/nightly_linux_arm64.yml
+++ b/.github/workflows/nightly_linux_arm64.yml
@@ -1,5 +1,4 @@
 on:
-  pull_request:
   workflow_dispatch:
   schedule:
     - cron:  '0 9 * * *'