diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 3d82b621..29754450 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -48,7 +48,7 @@ jobs:
         id: app-token
         with:
           app-id: ${{ vars.APP_ID }}
-          private-key: ${{ secrets.PRIVATE_KEY }}
+          private-key: ${{ secrets.APP_KEY }}
 
       - name: Get GitHub App User ID
         id: user-id