diff --git a/.github/workflows/coveralls.yml b/.github/workflows/coveralls.yml
index 235ead0..831fd43 100644
--- a/.github/workflows/coveralls.yml
+++ b/.github/workflows/coveralls.yml
@@ -4,7 +4,7 @@ jobs:
   build:
     runs-on: 'ubuntu-latest'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: shogo82148/actions-setup-perl@v1
         with:
           perl-version: 5.32
diff --git a/.github/workflows/freebsd.yml b/.github/workflows/freebsd.yml
index 5ad3079..dd46ed0 100644
--- a/.github/workflows/freebsd.yml
+++ b/.github/workflows/freebsd.yml
@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: 'macos-latest'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Perl environment
         uses: shogo82148/actions-setup-perl@v1
       - name: Test and build
diff --git a/.github/workflows/install-linux.yml b/.github/workflows/install-linux.yml
index b533cdc..6fd04d7 100644
--- a/.github/workflows/install-linux.yml
+++ b/.github/workflows/install-linux.yml
@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: 'macos-latest'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Perl environment
         uses: shogo82148/actions-setup-perl@v1
       - name: Test and build
diff --git a/.github/workflows/linux-normal-build.yml b/.github/workflows/linux-normal-build.yml
index 51e5dee..19d0d05 100644
--- a/.github/workflows/linux-normal-build.yml
+++ b/.github/workflows/linux-normal-build.yml
@@ -8,7 +8,7 @@ jobs:
     name: Perl 5.32 normal build and install
     steps:
       - name: check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: switch to perl 5.32
         uses: shogo82148/actions-setup-perl@v1
diff --git a/.github/workflows/linux-without_uk-build.yml b/.github/workflows/linux-without_uk-build.yml
index 87e4628..6fce525 100644
--- a/.github/workflows/linux-without_uk-build.yml
+++ b/.github/workflows/linux-without_uk-build.yml
@@ -8,7 +8,7 @@ jobs:
     name: Perl 5.32 build --without_uk and install
     steps:
       - name: check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: switch to perl 5.32
         uses: shogo82148/actions-setup-perl@v1
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index b41c52b..f054a2b 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -12,7 +12,7 @@ jobs:
     name: Perl ${{ matrix.perl }}
     steps:
       - name: check out code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: switch to perl ${{ matrix.perl }}
         uses: shogo82148/actions-setup-perl@v1
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index ffc61f9..268df67 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -9,7 +9,7 @@ jobs:
         runs-on: ['macos-13', 'macos-11', 'macos-12']
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Perl environment
         uses: shogo82148/actions-setup-perl@v1
       - name: Test and build
diff --git a/.github/workflows/openbsd.yml b/.github/workflows/openbsd.yml
index ae6ecfd..b8785a8 100644
--- a/.github/workflows/openbsd.yml
+++ b/.github/workflows/openbsd.yml
@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: 'macos-latest'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Perl environment
         uses: shogo82148/actions-setup-perl@v1
       - name: Test and build
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 8cad4d9..0471c12 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -5,7 +5,7 @@ jobs:
   build:
     runs-on: 'macos-latest'
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup Perl environment
         uses: shogo82148/actions-setup-perl@v1
       - name: Test and build