diff --git a/.github/workflows/depup.yml b/.github/workflows/depup.yml
index 68a8897..8f898e2 100644
--- a/.github/workflows/depup.yml
+++ b/.github/workflows/depup.yml
@@ -10,7 +10,7 @@ jobs:
   reviewdog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-depup/with-pr@v1
         with:
           file: action.yml
diff --git a/.github/workflows/dockerimage.yml b/.github/workflows/dockerimage.yml
index a9822c5..0402ca9 100644
--- a/.github/workflows/dockerimage.yml
+++ b/.github/workflows/dockerimage.yml
@@ -8,6 +8,6 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Build the Docker image
       run: docker build . --file Dockerfile --tag ${{ github.repository }}:$(date +%s)
diff --git a/.github/workflows/labels.yml b/.github/workflows/labels.yml
index 1245849..2aba97b 100644
--- a/.github/workflows/labels.yml
+++ b/.github/workflows/labels.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Manage labels
         uses: lannonbr/issue-label-manager-action@3.0.0
         env:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 419eb15..ae65bf1 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
     if: github.event.action != 'labeled'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       # Bump version on merging Pull Requests with specific labels.
       # (bump:major,bump:minor,bump:patch)
@@ -53,6 +53,6 @@ jobs:
     if: github.event.action == 'labeled'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Post bumpr status comment
         uses: haya14busa/action-bumpr@v1
diff --git a/.github/workflows/reviewdog.yml b/.github/workflows/reviewdog.yml
index 559a18d..e4766b2 100644
--- a/.github/workflows/reviewdog.yml
+++ b/.github/workflows/reviewdog.yml
@@ -9,7 +9,7 @@ jobs:
     name: runner / shellcheck
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: haya14busa/action-cond@v1
         id: reporter
         with:
@@ -25,14 +25,14 @@ jobs:
     name: runner / shfmt
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-shfmt@v1
 
   actionlint:
     name: runner / actionlint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-actionlint@v1
         with:
           reporter: github-check
@@ -42,7 +42,7 @@ jobs:
     name: runner / misspell
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-misspell@v1
         with:
           reporter: github-check
@@ -53,7 +53,7 @@ jobs:
     name: runner / alex
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: reviewdog/action-alex@v1
         with:
           reporter: github-check
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6ad9381..59ab321 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -24,7 +24,7 @@ jobs:
           - ".sqlfluff.snowflake"
           - ".sqlfluff.spark"
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: ./
         id: lint-sql
         with:
@@ -69,7 +69,7 @@ jobs:
           - ".sqlfluff.snowflake"
           - ".sqlfluff.spark"
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: ./
         id: lint-sql
         with: