diff --git a/.github/workflows/update-lockfile.yml b/.github/workflows/update-lockfile.yml
index 514447a..c42f6f1 100644
--- a/.github/workflows/update-lockfile.yml
+++ b/.github/workflows/update-lockfile.yml
@@ -5,6 +5,7 @@ on:
   push:
     branches:
       - '**'
+      - '!main'
     paths:
       - 'pyproject.toml'
   workflow_dispatch: