diff --git a/.github/workflows/build-and-test.yml b/.github/workflows/build-and-test.yml
index 481d3e16..dbe3dddd 100644
--- a/.github/workflows/build-and-test.yml
+++ b/.github/workflows/build-and-test.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Cache
       uses: actions/cache@v4
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index fec7c54e..abde8d30 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install .NET SDK
         uses: actions/setup-dotnet@v4
diff --git a/.github/workflows/meta-test.yml b/.github/workflows/meta-test.yml
index 934accd3..5330970b 100644
--- a/.github/workflows/meta-test.yml
+++ b/.github/workflows/meta-test.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
 
     - name: Cache
       uses: actions/cache@v4
diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index a4d7ed79..71755040 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -12,7 +12,7 @@ jobs:
     name: Publish to NuGet.org
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: nuget/setup-nuget@v2
         with:
diff --git a/.github/workflows/publish-log4brains.yml b/.github/workflows/publish-log4brains.yml
index 1606f044..7fa3a66e 100644
--- a/.github/workflows/publish-log4brains.yml
+++ b/.github/workflows/publish-log4brains.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           persist-credentials: false # required by JamesIves/github-pages-deploy-action
           fetch-depth: 0 # required by Log4brains to work correctly (needs the whole Git history)
diff --git a/.github/workflows/update-settings.yml b/.github/workflows/update-settings.yml
index 65c55130..c1c322e7 100644
--- a/.github/workflows/update-settings.yml
+++ b/.github/workflows/update-settings.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       # If this is a PR, dry-run the PR and watch for errors
       - name: Dry-run settings in the PR
@@ -30,7 +30,7 @@ jobs:
       # Explicitly checkout main branch to ensure production settings are reset
       - name: Switch to main for production settings
         if: github.event_name == 'pull_request'
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: main