diff --git a/.github/workflows/unittestagenda.yml b/.github/workflows/unittestagenda.yml
index e383eab185..63c42b0183 100644
--- a/.github/workflows/unittestagenda.yml
+++ b/.github/workflows/unittestagenda.yml
@@ -36,7 +36,7 @@ jobs:
     - uses: actions/setup-node@v3
       with:
         node-version: 'v21.4.0' # works on macOS
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         persist-credentials: false
     - uses: ruby/setup-ruby@v1
diff --git a/.github/workflows/unittestlib.yml b/.github/workflows/unittestlib.yml
index 5653624a3a..ca0108ca3b 100644
--- a/.github/workflows/unittestlib.yml
+++ b/.github/workflows/unittestlib.yml
@@ -34,7 +34,7 @@ jobs:
       run: |
         brew install subversion
       if: ${{ runner.os == 'macOS' }}
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         persist-credentials: false
     - name: ruby
diff --git a/.github/workflows/unittestnavigation.yml b/.github/workflows/unittestnavigation.yml
index 0eb5843d30..4984c72741 100644
--- a/.github/workflows/unittestnavigation.yml
+++ b/.github/workflows/unittestnavigation.yml
@@ -26,7 +26,7 @@ jobs:
         node-version: '18.16.0'
         # it seems that using the default Ubuntu version of node (14.19.0)
         # somehow fails to set the correct path for rake to use
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         persist-credentials: false
     - uses: ruby/setup-ruby@v1