diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 59597b4..d972053 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -34,7 +34,7 @@ jobs:
         # Use bash shells on all platforms.
         shell: bash
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: 🧾 Checkout
 
       - uses: actions/setup-dotnet@v3
@@ -65,7 +65,7 @@ jobs:
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: 🧾 Checkout
 
       - uses: ./
@@ -83,7 +83,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set Node.js 16.x
         uses: actions/setup-node@v3