diff --git a/.github/workflows/correctness.yml b/.github/workflows/correctness.yml
index c461234..98f7125 100644
--- a/.github/workflows/correctness.yml
+++ b/.github/workflows/correctness.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Check out repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Verify vendored Mermaid
         shell: bash
diff --git a/.github/workflows/firefox-smoke.yml b/.github/workflows/firefox-smoke.yml
index eff7b48..ef3ede8 100644
--- a/.github/workflows/firefox-smoke.yml
+++ b/.github/workflows/firefox-smoke.yml
@@ -14,7 +14,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Check out repository
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Set up Node.js
         uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0