diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0986989..a159bd8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v5
         with:
@@ -53,7 +53,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v5
         with:
diff --git a/.github/workflows/lighthouse.yml b/.github/workflows/lighthouse.yml
index a89c698..380cf75 100644
--- a/.github/workflows/lighthouse.yml
+++ b/.github/workflows/lighthouse.yml
@@ -20,7 +20,7 @@ jobs:
       NEON_AUTH_COOKIE_SECRET: ci-build-only-dummy-cookie-secret-0123456789
       PETROBRAIN_API_URL: https://api.invalid
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v5
         with:
diff --git a/.github/workflows/pa11y.yml b/.github/workflows/pa11y.yml
index acb5188..b4ce1f2 100644
--- a/.github/workflows/pa11y.yml
+++ b/.github/workflows/pa11y.yml
@@ -21,7 +21,7 @@ jobs:
       NEON_AUTH_COOKIE_SECRET: ci-build-only-dummy-cookie-secret-0123456789
       PETROBRAIN_API_URL: https://api.invalid
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v5
         with:
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
index 96f8a67..5643d65 100644
--- a/.github/workflows/security.yml
+++ b/.github/workflows/security.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - uses: actions/setup-node@v5
         with:
@@ -54,7 +54,7 @@ jobs:
       contents: read
       security-events: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       - name: Initialize CodeQL
         uses: github/codeql-action/init@v3
diff --git a/.github/workflows/zap-baseline.yml b/.github/workflows/zap-baseline.yml
index 5f0bd5e..41bd9b1 100644
--- a/.github/workflows/zap-baseline.yml
+++ b/.github/workflows/zap-baseline.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v7
 
       # v0.15.0+ uses the current upload-artifact API (v0.12.0 crashed on the removed
       # "Create Artifact Container" endpoint). continue-on-error keeps this advisory scan