diff --git a/.github/workflows/prepare-release.yml b/.github/workflows/prepare-release.yml
index 74417ec..4f7c116 100644
--- a/.github/workflows/prepare-release.yml
+++ b/.github/workflows/prepare-release.yml
@@ -51,4 +51,4 @@ jobs:
           AWS_SNS_ARN_DEV: ${{ secrets.AWS_SNS_ARN_DEV }}
           AWS_SNS_ARN_STAGING: ${{ secrets.AWS_SNS_ARN_STAGING }}
           INPUT_TRIGGERED_BY: ${{ github.repository }}
-          INPUT_BRANCH: ${{ github.ref }}
+          INPUT_BRANCH: ${{ steps.release.outputs.tag_name }}