diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 42e3613..497af9b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Inject slug/short variables
-      uses: rlespinasse/github-slug-action@v4
+      uses: rlespinasse/github-slug-action@v4.4.1
     - name: Checkout
       id: checkout
       uses: actions/checkout@master
@@ -26,7 +26,7 @@ jobs:
     - name: Get changed files
       id: changed-files
       if: ${{ github.event_name != 'workflow_dispatch' }}
-      uses: rlespinasse/github-slug-action@v4
+      uses: rlespinasse/github-slug-action@v4.4.1
     - id: filter_changed_files
       if: ${{ steps.changed-files.conclusion == 'success'}}
       uses: actions/github-script@0.9.0