diff --git a/.github/workflows/django.yml b/.github/workflows/django.yml
index 48a8abba..5905f74a 100644
--- a/.github/workflows/django.yml
+++ b/.github/workflows/django.yml
@@ -21,7 +21,7 @@ jobs:
         python-version: ["3.11"]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/docker-push.yml b/.github/workflows/docker-push.yml
index 38ea175f..0740be75 100644
--- a/.github/workflows/docker-push.yml
+++ b/.github/workflows/docker-push.yml
@@ -8,7 +8,7 @@ jobs:
   push:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: Create dummy env-prod
       run: mv ./.env.prod.sample ./.env.prod
     - name: Build the Docker image
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 1ce81134..f809f3e6 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: Create dummy env-prod
       run: mv ./.env.prod.sample ./.env.prod
     - name: Build the Docker image