diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index a5fe8a55..3072eb7f 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -18,7 +18,7 @@ jobs:
       run: |
         sudo apt install -y fd-find
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: git fetch
       run: git fetch origin main:main
@@ -68,7 +68,7 @@ jobs:
         which stylish-haskell
         stylish-haskell --version
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: "Run `stylish-haskell`"
       run: |
diff --git a/.github/workflows/github-page.yml b/.github/workflows/github-page.yml
index 839e8839..6eb0dce4 100644
--- a/.github/workflows/github-page.yml
+++ b/.github/workflows/github-page.yml
@@ -35,7 +35,7 @@ jobs:
       run: sudo apt install pandoc
 
     - name: Checkout io-sim repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Install Haskell
       uses: haskell-actions/setup@v2
diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index a541e04d..03aa230e 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -48,7 +48,7 @@ jobs:
         echo "PATH = $PATH"
         echo "LLVM_CONFIG = $LLVM_CONFIG"
 
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
 
     - name: "Configure cabal.project.local"
       run: |