diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f0a5d928..ee0fa788 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -17,7 +17,7 @@ jobs:
     name: Publish docker image
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Log into registry
         run: docker login ghcr.io -u ${{ github.actor }} -p ${{ secrets.GITHUB_TOKEN }}
@@ -44,7 +44,7 @@ jobs:
     needs: publish-ghcr
     steps:
       - name: Check Out Repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Get version
@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check Out Repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Build docs
         run: |
           npm i swagger-cli
@@ -102,7 +102,7 @@ jobs:
     if: always()
     runs-on: ubuntu-latest
     steps:
-      - uses: dataesr/mm-notifier-action@v1
+      - uses: dataesr/mm-notifier-action@v1.0.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN}}
           mattermost_webhook_url: ${{ secrets.MATTERMOST_WEBHOOK_URL }}
diff --git a/.github/workflows/staging.yml b/.github/workflows/staging.yml
index ea9a6f0b..797f981a 100644
--- a/.github/workflows/staging.yml
+++ b/.github/workflows/staging.yml
@@ -17,7 +17,7 @@ jobs:
     name: Publish docker image
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Log into registry
         run: docker login ghcr.io -u ${{ github.actor }} -p ${{ secrets.GITHUB_TOKEN }}
@@ -40,7 +40,7 @@ jobs:
     name: Deploy documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Build docs
         run: |
           npm i swagger-cli
@@ -69,7 +69,7 @@ jobs:
     if: always()
     runs-on: ubuntu-latest
     steps:
-      - uses: dataesr/mm-notifier-action@v1
+      - uses: dataesr/mm-notifier-action@v1.0.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN}}
           mattermost_webhook_url: ${{ secrets.MATTERMOST_WEBHOOK_URL }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 96c0c1f4..52e238b8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -9,7 +9,7 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run tests
         run: docker-compose -f docker-compose-test.yml up --build --exit-code-from paysage-api
 
@@ -18,7 +18,7 @@ jobs:
     if: always()
     runs-on: ubuntu-latest
     steps:
-      - uses: dataesr/mm-notifier-action@v1
+      - uses: dataesr/mm-notifier-action@v1.0.2
         with:
           github_token: ${{ secrets.GITHUB_TOKEN}}
           mattermost_webhook_url: ${{ secrets.MATTERMOST_WEBHOOK_URL }}