diff --git a/.github/workflows/deploy-ui.yaml b/.github/workflows/deploy-ui.yaml
index 92ca1b7..d6233ad 100644
--- a/.github/workflows/deploy-ui.yaml
+++ b/.github/workflows/deploy-ui.yaml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check out code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Use Node.js 16
       uses: actions/setup-node@v3
       with:
@@ -66,7 +66,7 @@ jobs:
         name: site-artifacts
         path: ../build
     - name: Check out code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         ref: gh-pages
     - name: Deploy to gh-pages