diff --git a/.github/workflows/ci-lean.yml b/.github/workflows/ci-lean.yml
index 060763f..453ea11 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) Run pre-commit (all files)
         # WHY: Single source of truth for locally runnable quality gates.
@@ -65,5 +65,5 @@ 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 2947fd8..687fdaf 100644
--- a/.github/workflows/links.yml
+++ b/.github/workflows/links.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: 1) Checkout repository code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: 2) Check links with Lychee
         uses: lycheeverse/lychee-action@v2