diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bd4b7f0..53722cc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
         java: ['25']
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v4
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index 1d1003a..96a41f5 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -13,7 +13,7 @@ jobs:
     name: dependency vulnerability scan
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/dependency-review-action@v4
         with:
           fail-on-severity: high
diff --git a/.github/workflows/javadocs.yml b/.github/workflows/javadocs.yml
index 0f16585..fdbc445 100644
--- a/.github/workflows/javadocs.yml
+++ b/.github/workflows/javadocs.yml
@@ -24,7 +24,7 @@ jobs:
       url: ${{ steps.deployment.outputs.page_url }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up JDK 25
         uses: actions/setup-java@v4
diff --git a/.github/workflows/nightly-live.yml b/.github/workflows/nightly-live.yml
index d77f475..34d2c77 100644
--- a/.github/workflows/nightly-live.yml
+++ b/.github/workflows/nightly-live.yml
@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 20
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up JDK 25
         uses: actions/setup-java@v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 6031ad0..01a56d3 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
       HOMEBREW_TAP_TOKEN: ${{ secrets.HOMEBREW_TAP_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Set up JDK 25
         uses: actions/setup-java@v4