diff --git a/.github/workflows/ubuntu-gcc-ubsan.yaml b/.github/workflows/ubuntu-gcc-ubsan.yaml
index 86ee4aa8..1dd1954b 100644
--- a/.github/workflows/ubuntu-gcc-ubsan.yaml
+++ b/.github/workflows/ubuntu-gcc-ubsan.yaml
@@ -1,9 +1,6 @@
 name: R Package UBSan Check
 
 on:
-  push:
-    branches:
-      - main
   pull_request:
     branches:
       - main