diff --git a/.github/workflows/ngtest.yml b/.github/workflows/ngtest.yml
index dd81176..469aa1a 100644
--- a/.github/workflows/ngtest.yml
+++ b/.github/workflows/ngtest.yml
@@ -6,7 +6,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
       - name: json-syntax-check
         uses: ./
         with:
diff --git a/.github/workflows/oktest.yml b/.github/workflows/oktest.yml
index 2c79927..dc2f34d 100644
--- a/.github/workflows/oktest.yml
+++ b/.github/workflows/oktest.yml
@@ -6,7 +6,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
       - name: json-syntax-check
         uses: ./
         with:
diff --git a/.github/workflows/rubocop.yml b/.github/workflows/rubocop.yml
index ac17384..0cc3f80 100644
--- a/.github/workflows/rubocop.yml
+++ b/.github/workflows/rubocop.yml
@@ -5,7 +5,7 @@ jobs:
   rubocop:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v5
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: 3.2
diff --git a/README.md b/README.md
index d1f4a4f..a43ef9a 100644
--- a/README.md
+++ b/README.md
@@ -45,7 +45,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v5
       - name: json-syntax-check
         uses: limitusus/json-syntax-check@v2
         with: