diff --git a/.github/workflows/dev-image.yml b/.github/workflows/dev-image.yml
index 10a775d..0cca9ea 100644
--- a/.github/workflows/dev-image.yml
+++ b/.github/workflows/dev-image.yml
@@ -9,7 +9,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v3.1.0
       -
         name: Set up Docker Buildx
         uses: crazy-max/ghaction-docker-buildx@v3
diff --git a/.github/workflows/docker-image.yml b/.github/workflows/docker-image.yml
index cd29ab3..0bbe763 100644
--- a/.github/workflows/docker-image.yml
+++ b/.github/workflows/docker-image.yml
@@ -9,7 +9,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v3.1.0
       -
         name: Set up Docker Buildx
         uses: crazy-max/ghaction-docker-buildx@v3
diff --git a/.github/workflows/pylint.yml b/.github/workflows/pylint.yml
index c9bdf81..b9ead6c 100644
--- a/.github/workflows/pylint.yml
+++ b/.github/workflows/pylint.yml
@@ -9,7 +9,7 @@ jobs:
       matrix:
         python-version: ["3.7"]
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.1.0
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v4
       with:
diff --git a/.github/workflows/test-backend.yml b/.github/workflows/test-backend.yml
index 7e26aba..a475b80 100644
--- a/.github/workflows/test-backend.yml
+++ b/.github/workflows/test-backend.yml
@@ -13,7 +13,7 @@ jobs:
       run:
         working-directory: ./backend
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v3.1.0
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with:
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 2fe0e63..4eb1283 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -8,7 +8,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v3.1.0
       -
         name: Set up Docker Buildx
         uses: crazy-max/ghaction-docker-buildx@v3