diff --git a/.github/workflows/actions.lock b/.github/workflows/actions.lock
new file mode 100644
index 0000000..792c1e8
--- /dev/null
+++ b/.github/workflows/actions.lock
@@ -0,0 +1,28 @@
+# This file is machine-generated by `gh actions-lock`.
+# Do not edit by hand; run `gh actions-lock` to update.
+# Docs: https://gh.io/actions-lockfile
+version: 'v0.0.2'
+workflows:
+    '.github/workflows/governance.yml': []
+    '.github/workflows/hypatia-scan.yml': []
+    '.github/workflows/push-email-notify.yml':
+        - 'dawidd6/action-send-mail@v3.12.0'
+    '.github/workflows/secret-scanner.yml':
+        - 'actions/checkout@v7.0.1'
+        - 'trufflesecurity/trufflehog@main'
+dependencies:
+    'actions/checkout@v7.0.1':
+        ref: 'v7.0.1'
+        commit: 'sha1-3d3c42e5aac5ba805825da76410c181273ba90b1'
+        owner_id: 44036562
+        repo_id: 197814629
+    'dawidd6/action-send-mail@v3.12.0':
+        ref: 'v3.12.0'
+        commit: 'sha1-0bbdab096651ee93f37ec02383e088183d41ff0b'
+        owner_id: 9713907
+        repo_id: 222439721
+    'trufflesecurity/trufflehog@main':
+        ref: 'main'
+        commit: 'sha1-1ea7fc1960b818e3c3ac3984f85922e3acba4061'
+        owner_id: 79229934
+        repo_id: 77726177
diff --git a/.github/workflows/governance.yml b/.github/workflows/governance.yml
index 8161ec2..254251f 100644
--- a/.github/workflows/governance.yml
+++ b/.github/workflows/governance.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: PMPL-1.0-or-later
+# This workflow is managed by gh actions-lock.
 name: Governance
 
 on:
@@ -9,8 +10,9 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
 
 jobs:
   governance:
-    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@5a93d9d57cc04de4002d6d0ecd336fc7a8698910
+    uses: hyperpolymath/standards/.github/workflows/governance-reusable.yml@84355587cb2a1f86e6882de83514a32db2646e7a
diff --git a/.github/workflows/hypatia-scan.yml b/.github/workflows/hypatia-scan.yml
index e715848..c7974eb 100644
--- a/.github/workflows/hypatia-scan.yml
+++ b/.github/workflows/hypatia-scan.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: PMPL-1.0-or-later
+# This workflow is managed by gh actions-lock.
 name: Hypatia Security Scan
 
 on:
@@ -11,9 +12,10 @@ on:
   workflow_dispatch:
 
 permissions:
+  actions: read
   contents: read
   security-events: read
 
 jobs:
   scan:
-    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@5a93d9d57cc04de4002d6d0ecd336fc7a8698910
+    uses: hyperpolymath/standards/.github/workflows/hypatia-scan-reusable.yml@84355587cb2a1f86e6882de83514a32db2646e7a
diff --git a/.github/workflows/push-email-notify.yml b/.github/workflows/push-email-notify.yml
index f8f3fa4..b69c87f 100644
--- a/.github/workflows/push-email-notify.yml
+++ b/.github/workflows/push-email-notify.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 # Dormant push-email notification. ARMED by setting the repo variable
 # PUSH_EMAIL_ENABLED=true (the single on/off switch). Addresses are pre-filled;
 # sending needs the org SMTP secrets (SMTP_HOST/PORT/USER/PASS). Inherited by
@@ -15,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Send push notification email
-        uses: dawidd6/action-send-mail@0bbdab096651ee93f37ec02383e088183d41ff0b # pinned
+        uses: dawidd6/action-send-mail@v3.12.0
         with:
           server_address: ${{ secrets.SMTP_HOST }}
           server_port: ${{ secrets.SMTP_PORT }}
diff --git a/.github/workflows/secret-scanner.yml b/.github/workflows/secret-scanner.yml
index 8b09655..6bf01de 100644
--- a/.github/workflows/secret-scanner.yml
+++ b/.github/workflows/secret-scanner.yml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
+# This workflow is managed by gh actions-lock.
 name: Secret Scanner
 on:
   pull_request:
@@ -8,15 +9,16 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 permissions:
+  actions: read
   contents: read
 jobs:
   scan:
-    uses: hyperpolymath/standards/.github/workflows/secret-scanner-reusable.yml@3e4bd4c93911750727e2e4c66dff859e00079da0
+    uses: hyperpolymath/standards/.github/workflows/secret-scanner-reusable.yml@84355587cb2a1f86e6882de83514a32db2646e7a
     secrets: inherit
   trufflehog:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v7
+      - uses: actions/checkout@v7.0.1
         with:
           fetch-depth: 0
       - name: TruffleHog Secret Scan