diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9808e89..b2092b2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
       matrix: ${{ fromJSON(needs.generate-matrix.outputs.matrix) }}
     steps:
       - name: Checkout base repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Set up Haskell
         id: setup-haskell
diff --git a/.github/workflows/lint-actions.yml b/.github/workflows/lint-actions.yml
index 0f0c455..be98138 100644
--- a/.github/workflows/lint-actions.yml
+++ b/.github/workflows/lint-actions.yml
@@ -5,7 +5,7 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     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/linting.yml b/.github/workflows/linting.yml
index 1265781..8cc7c7c 100644
--- a/.github/workflows/linting.yml
+++ b/.github/workflows/linting.yml
@@ -9,7 +9,7 @@ jobs:
   fourmolu:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - uses: fourmolu/fourmolu-action@v11
       with:
@@ -20,7 +20,7 @@ jobs:
   hlint:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: 'Set up HLint'
       uses: haskell-actions/hlint-setup@v2