diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dbedf88..d806b3b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,7 +24,7 @@ jobs:
         architecture: [ 'x64' ]
     name: Build with JDK ${{ matrix.java }} on ${{ matrix.architecture }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup JDK
         uses: actions/setup-java@v5
         with:
@@ -45,7 +45,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Validate JavaDocs
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup JDK
         uses: actions/setup-java@v5
         with:
@@ -63,7 +63,7 @@ jobs:
     if: github.ref == 'refs/heads/main'
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup JDK
         uses: actions/setup-java@v5
         with:
diff --git a/.github/workflows/gha-lint.yml b/.github/workflows/gha-lint.yml
index 12fce5e..b66bb93 100644
--- a/.github/workflows/gha-lint.yml
+++ b/.github/workflows/gha-lint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     name: Lint workflows
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Check workflow files
         uses: docker://rhysd/actionlint:latest
         with:
diff --git a/.github/workflows/pitest.yml b/.github/workflows/pitest.yml
index d2fd69f..08327c1 100644
--- a/.github/workflows/pitest.yml
+++ b/.github/workflows/pitest.yml
@@ -29,7 +29,7 @@ jobs:
         architecture: [ 'x64' ]
     name: Mutation Testing with JDK ${{ matrix.java }} on ${{ matrix.architecture }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup JDK
         uses: actions/setup-java@v5
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index e715add..e16812a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -16,7 +16,7 @@ jobs:
 
     name: Release ${{ github.event.inputs.release-tag }}
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           ref: ${{ github.event.inputs.release-tag }}