diff --git a/.github/workflows/announce-a-release.yml b/.github/workflows/announce-a-release.yml
index 47d08d6..f69e800 100644
--- a/.github/workflows/announce-a-release.yml
+++ b/.github/workflows/announce-a-release.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
@@ -47,7 +47,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
diff --git a/.github/workflows/breakage-against-ponyc-latest.yml b/.github/workflows/breakage-against-ponyc-latest.yml
index cef18df..2f2b1b3 100644
--- a/.github/workflows/breakage-against-ponyc-latest.yml
+++ b/.github/workflows/breakage-against-ponyc-latest.yml
@@ -15,7 +15,7 @@ jobs:
     container:
       image: ghcr.io/ponylang/shared-docker-ci-standard-builder:nightly
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Test
         run: make test config=debug
       - name: Send alert on failure
diff --git a/.github/workflows/generate-documentation.yml b/.github/workflows/generate-documentation.yml
index ada9411..9d308be 100644
--- a/.github/workflows/generate-documentation.yml
+++ b/.github/workflows/generate-documentation.yml
@@ -24,7 +24,7 @@ jobs:
       image: ghcr.io/ponylang/library-documentation-action-v2:release
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Generate documentation
         run: /entrypoint.py
         env:
diff --git a/.github/workflows/lint-action-workflows.yml b/.github/workflows/lint-action-workflows.yml
index f9aaea7..1238344 100644
--- a/.github/workflows/lint-action-workflows.yml
+++ b/.github/workflows/lint-action-workflows.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
       - name: Check workflow files
         uses: docker://ghcr.io/ponylang/shared-docker-ci-actionlint:20260311
         with:
diff --git a/.github/workflows/pr-repo-hygiene.yml b/.github/workflows/pr-repo-hygiene.yml
index b2ea0f8..b79fa4e 100644
--- a/.github/workflows/pr-repo-hygiene.yml
+++ b/.github/workflows/pr-repo-hygiene.yml
@@ -14,7 +14,7 @@ jobs:
     name: Lint bash, docker, markdown, and yaml
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Lint codebase
         uses: docker://github/super-linter:v3.8.3
         env:
@@ -29,7 +29,7 @@ jobs:
     name: Verify CHANGELOG is valid
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Verify CHANGELOG
         uses: docker://ghcr.io/ponylang/changelog-tool:release
         with:
diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 5f8430b..38e71db 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -23,6 +23,6 @@ jobs:
     container:
       image: ghcr.io/ponylang/shared-docker-ci-standard-builder:release
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
       - name: Test
         run: make test config=debug
diff --git a/.github/workflows/prepare-for-a-release.yml b/.github/workflows/prepare-for-a-release.yml
index a339df3..e860269 100644
--- a/.github/workflows/prepare-for-a-release.yml
+++ b/.github/workflows/prepare-for-a-release.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
@@ -63,7 +63,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
@@ -88,7 +88,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 08cd20b..ad55521 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout main
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
@@ -43,7 +43,7 @@ jobs:
       image: ghcr.io/ponylang/library-documentation-action-v2:release
     steps:
       - name: Checkout
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}
@@ -69,7 +69,7 @@ jobs:
     needs:
       - generate-documentation
     steps:
-      - uses: actions/checkout@v4.1.1
+      - uses: actions/checkout@v6.0.2
         with:
           ref: "main"
           token: ${{ secrets.RELEASE_TOKEN }}