diff --git a/.github/workflows/mutator.yaml b/.github/workflows/mutator.yaml
index 67d83bf..c831b1f 100644
--- a/.github/workflows/mutator.yaml
+++ b/.github/workflows/mutator.yaml
@@ -27,7 +27,13 @@ jobs:
       - run: sudo ln -fs /usr/share/zoneinfo/America/Sao_Paulo /etc/localtime
       - run: yarn
       - run: yarn test-ci
+      - name: Extract branch name
+        shell: bash
+        run: |
+          echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" \
+          >> $GITHUB_OUTPUT
+        id: extract_branch
       - name: Mutator run mutator
         run: |
           yarn stryker-mutate --reporters dashboard \
-          --dashboard.version ${{env.GITHUB_REF_NAME}}
+          --dashboard.version ${{ steps.extract_branch.outputs.branch }}
diff --git a/README.md b/README.md
index 539d121..6e0ce24 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [![Conventional Changelog](https://img.shields.io/badge/changelog-conventional-brightgreen.svg)](http://conventional-changelog.github.io)
 [![Standard Version](https://img.shields.io/badge/release-standard%20version-brightgreen.svg)](https://github.com/conventional-changelog/standard-version)
 [![Mutation testing badge](https://img.shields.io/endpoint?style=flat&url=https%3A%2F%2Fbadge-api.stryker-mutator.io%2Fgithub.com%2Fclaytonsilva%2Fnodejs-hexagonal-boilerplate%2Fmain)](https://dashboard.stryker-mutator.io/reports/github.com/claytonsilva/nodejs-hexagonal-boilerplate/main)
-![gh_actions](https://github.com/claytonsilva/nodejs-hexagonal-boilerplate/actions/workflows/main.yml/badge.svg)
+![gh_actions](https://github.com/claytonsilva/nodejs-hexagonal-boilerplate/actions/workflows/main.yaml/badge.svg)
 
 ## Inspiração