diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index 63bd266d..207116fb 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.yml
@@ -15,7 +15,7 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Download actionlint
         id: get_actionlint
         run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
diff --git a/.github/workflows/copyrights.yml b/.github/workflows/copyrights.yml
index 6b7c0c31..617bc7ea 100644
--- a/.github/workflows/copyrights.yml
+++ b/.github/workflows/copyrights.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: yegor256/copyrights-action@0.0.12
diff --git a/.github/workflows/lean.yml b/.github/workflows/lean.yml
index 135a9441..5de7c87a 100644
--- a/.github/workflows/lean.yml
+++ b/.github/workflows/lean.yml
@@ -26,7 +26,7 @@ jobs:
           echo "$HOME/.elan/bin" >> $GITHUB_PATH
 
       - name: '📥 Checkout repository'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: '👝 Cache .lake/'
         id: cache-lake
diff --git a/.github/workflows/markdown-lint.yml b/.github/workflows/markdown-lint.yml
index c334bf54..abdd055b 100644
--- a/.github/workflows/markdown-lint.yml
+++ b/.github/workflows/markdown-lint.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: DavidAnson/markdownlint-cli2-action@v20.0.0
diff --git a/.github/workflows/pdd.yml b/.github/workflows/pdd.yml
index d3430fa0..42f3d233 100644
--- a/.github/workflows/pdd.yml
+++ b/.github/workflows/pdd.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: volodya-lombrozo/pdd-action@master
diff --git a/.github/workflows/reuse.yml b/.github/workflows/reuse.yml
index 8413e5bd..d405b089 100644
--- a/.github/workflows/reuse.yml
+++ b/.github/workflows/reuse.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: fsfe/reuse-action@v5
diff --git a/.github/workflows/typos.yml b/.github/workflows/typos.yml
index bab7181b..25098e82 100644
--- a/.github/workflows/typos.yml
+++ b/.github/workflows/typos.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: crate-ci/typos@v1.35.1
diff --git a/.github/workflows/xcop.yml b/.github/workflows/xcop.yml
index c483cbae..1a60fbdc 100644
--- a/.github/workflows/xcop.yml
+++ b/.github/workflows/xcop.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: g4s8/xcop-action@master
diff --git a/.github/workflows/yamllint.yml b/.github/workflows/yamllint.yml
index 75c717cf..58aa97e2 100644
--- a/.github/workflows/yamllint.yml
+++ b/.github/workflows/yamllint.yml
@@ -15,5 +15,5 @@ jobs:
     timeout-minutes: 15
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: ibiqlik/action-yamllint@v3