diff --git a/.github/workflows/deploy-heroku.yaml b/.github/workflows/deploy-heroku.yaml
index 7c7a20d..632d17b 100644
--- a/.github/workflows/deploy-heroku.yaml
+++ b/.github/workflows/deploy-heroku.yaml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: git checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
 
     - name: deploy to Heroku
       run: git push https://heroku:${{ secrets.HEROKU_API_KEY }}@git.heroku.com/${{ secrets.HEROKU_APP_NAME }}.git origin/main:main
diff --git a/.github/workflows/social-post.yaml b/.github/workflows/social-post.yaml
index 38c266a..9e58d3f 100644
--- a/.github/workflows/social-post.yaml
+++ b/.github/workflows/social-post.yaml
@@ -17,7 +17,7 @@ jobs:
     steps:
 
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
 
     - name: Configure target date
       run: |
@@ -83,4 +83,4 @@ jobs:
               "https://push.nodeping.com/v1?id=${NODEPING_ID}&checktoken=${NODEPING_CHECKTOKEN}"
         else
           echo "WARNING: nodeping not configured for update-data"
-        fi
\ No newline at end of file
+        fi
diff --git a/.github/workflows/update-data.yaml b/.github/workflows/update-data.yaml
index 4df64b5..f74be9e 100644
--- a/.github/workflows/update-data.yaml
+++ b/.github/workflows/update-data.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
 
     - name: Update ICANN
       run: bin/update_icann.sh
@@ -46,4 +46,4 @@ jobs:
               "https://push.nodeping.com/v1?id=${NODEPING_ID}&checktoken=${NODEPING_CHECKTOKEN}"
         else
           echo "WARNING: nodeping not configured for update-data"
-        fi
\ No newline at end of file
+        fi