diff --git a/.github/workflows/cache.yml b/.github/workflows/cache.yml
index ec7536a5b..f3e8aef9d 100644
--- a/.github/workflows/cache.yml
+++ b/.github/workflows/cache.yml
@@ -8,7 +8,7 @@ jobs:
   cache:
     runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/disk=large"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Anaconda
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 22db382f1..62a60d062 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
   preview:
     runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/disk=large"
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: Setup Anaconda
diff --git a/.github/workflows/collab.yml b/.github/workflows/collab.yml
index 58e26b43c..5cd54307e 100644
--- a/.github/workflows/collab.yml
+++ b/.github/workflows/collab.yml
@@ -7,7 +7,7 @@ jobs:
       image: docker://us-docker.pkg.dev/colab-images/public/runtime:latest
       options: --gpus all
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       # Install build software
diff --git a/.github/workflows/linkcheck.yml b/.github/workflows/linkcheck.yml
index 7bfc06a64..cb42eb2c1 100644
--- a/.github/workflows/linkcheck.yml
+++ b/.github/workflows/linkcheck.yml
@@ -13,7 +13,7 @@ jobs:
     steps:
       # Checkout the live site (html)
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: gh-pages
       - name: Link Checker
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index b0a9a6c8f..c2ac51874 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: "runs-on=${{ github.run_id }}/family=g4dn.2xlarge/image=quantecon_ubuntu2404/disk=large"
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Setup Anaconda
         uses: conda-incubator/setup-miniconda@v3
         with: