diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 48cbe2e..ff6ae69 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
@@ -59,7 +59,7 @@ jobs:
       matrix:
         python-version: ["3.13", "3.14"]
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
@@ -90,7 +90,7 @@ jobs:
     timeout-minutes: 10
     needs: [lint, test]
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 29044f3..e76aa1d 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -23,15 +23,15 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4
+        uses: github/codeql-action/init@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4
         with:
           languages: python
           queries: security-extended,security-and-quality
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4
+        uses: github/codeql-action/analyze@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4
diff --git a/.github/workflows/dependency-review.yml b/.github/workflows/dependency-review.yml
index d694e42..7d9a6cb 100644
--- a/.github/workflows/dependency-review.yml
+++ b/.github/workflows/dependency-review.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index f4041fe..350d923 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -23,7 +23,7 @@ jobs:
         os: [ubuntu-latest, macos-latest]
         python-version: ["3.13", "3.14"]
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2df3a4f..7e0338c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -33,7 +33,7 @@ jobs:
           exit 1
 
       - name: Check out release tag
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           ref: refs/tags/${{ inputs.tag }}
           fetch-depth: 0
@@ -99,7 +99,7 @@ jobs:
       GH_REPO: ${{ github.repository }}
     steps:
       - name: Check out verified release commit
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           ref: ${{ needs.verify.outputs.release_commit }}
           fetch-depth: 0
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index f1fa710..30aa5fd 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -30,6 +30,6 @@ jobs:
           publish_results: false
 
       - name: Upload SARIF
-        uses: github/codeql-action/upload-sarif@99df26d4f13ea111d4ec1a7dddef6063f76b97e9 # v4
+        uses: github/codeql-action/upload-sarif@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4
         with:
           sarif_file: results.sarif
diff --git a/.github/workflows/sync-labels.yml b/.github/workflows/sync-labels.yml
index 12dd859..cbf44f3 100644
--- a/.github/workflows/sync-labels.yml
+++ b/.github/workflows/sync-labels.yml
@@ -35,7 +35,7 @@ jobs:
           echo "Label synchronization must run from master." >&2
           exit 1
 
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/testpypi.yml b/.github/workflows/testpypi.yml
index fa821a0..7833d5d 100644
--- a/.github/workflows/testpypi.yml
+++ b/.github/workflows/testpypi.yml
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false
 
@@ -74,6 +74,6 @@ jobs:
           path: dist
 
       - name: Publish to TestPyPI via Trusted Publishing
-        uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # release/v1
+        uses: pypa/gh-action-pypi-publish@ba38be9e461d3875417946c167d0b5f3d385a247 # release/v1
         with:
           repository-url: https://test.pypi.org/legacy/
diff --git a/.github/workflows/vulnerability-scan.yml b/.github/workflows/vulnerability-scan.yml
index da219fb..12f2153 100644
--- a/.github/workflows/vulnerability-scan.yml
+++ b/.github/workflows/vulnerability-scan.yml
@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
         with:
           persist-credentials: false