diff --git a/.github/workflows/docker-develop.yml b/.github/workflows/docker-develop.yml
index 345514d32..f04888e98 100644
--- a/.github/workflows/docker-develop.yml
+++ b/.github/workflows/docker-develop.yml
@@ -13,7 +13,7 @@ jobs:
     if: github.repository == 'misskey-dev/misskey'
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.3.0
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v3
diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index a84e4bc96..84d36f846 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Check out the repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3.3.0
       - name: Docker meta
         id: meta
         uses: docker/metadata-action@v3
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index affe255fe..3c51d94bc 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -11,7 +11,7 @@ jobs:
   yarn_install:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.3.0
       with:
         fetch-depth: 0
         submodules: true
@@ -33,7 +33,7 @@ jobs:
         - frontend
         - sw
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.3.0
       with:
         fetch-depth: 0
         submodules: true
diff --git a/.github/workflows/pr-preview-deploy.yml b/.github/workflows/pr-preview-deploy.yml
index f43d1b229..5777679e2 100644
--- a/.github/workflows/pr-preview-deploy.yml
+++ b/.github/workflows/pr-preview-deploy.yml
@@ -53,7 +53,7 @@ jobs:
 
     # Check out merge commit
     - name: Fork based /deploy checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3.3.0
       with:
         ref: 'refs/pull/${{ github.event.client_payload.pull_request.number }}/merge'
 
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b662e5e24..a607a79cb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -30,7 +30,7 @@ jobs:
           - 56312:6379
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.3.0
       with:
         submodules: true
     - name: Use Node.js ${{ matrix.node-version }}
@@ -77,7 +77,7 @@ jobs:
           - 56312:6379
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3.3.0
       with:
         submodules: true
     # https://github.com/cypress-io/cypress-docker-images/issues/150