diff --git a/.github/workflows/ci-lean.yml b/.github/workflows/ci-lean.yml
index d1f3a69..5fb48ca 100644
--- a/.github/workflows/ci-lean.yml
+++ b/.github/workflows/ci-lean.yml
@@ -38,7 +38,7 @@ jobs:
 
       - name: A1) Checkout repository code
         # WHY: Needed to access files for checks.
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: A2) Install uv
         # WHY: The E2) se-validate-manifest pre-commit hook shells out to `uvx`,
@@ -66,5 +66,5 @@ jobs:
       # BUILD: Get code and build Lean project
       # ============================================================
 
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: leanprover/lean-action@v1
diff --git a/.github/workflows/links.yml b/.github/workflows/links.yml
index 1317ca0..e83a813 100644
--- a/.github/workflows/links.yml
+++ b/.github/workflows/links.yml
@@ -37,7 +37,7 @@ jobs:
 
     steps:
       - name: 1) Checkout repository code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         # WHY: Required so Lychee can inspect repository files.
 
       - name: 2) Run Lychee