diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 997efc6..0a595fb 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -44,12 +44,12 @@ jobs:
           persist-credentials: false
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@1c5b675653bb5c22dbe9b12b556ec555138e09fd # v4.38.0 (4.38.1 blocked estate-wide; nexia-list#100)
+        uses: github/codeql-action/init@2892aa5e19bbd11bc0cff5427e3b750a04d9e3c2 # v4.38.0 (4.38.1 blocked estate-wide; nexia-list#100)
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@1c5b675653bb5c22dbe9b12b556ec555138e09fd # v4.38.0 (4.38.1 blocked estate-wide; nexia-list#100)
+        uses: github/codeql-action/analyze@2892aa5e19bbd11bc0cff5427e3b750a04d9e3c2 # v4.38.0 (4.38.1 blocked estate-wide; nexia-list#100)
         with:
           category: "/language:${{ matrix.language }}"
diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index ae2c8a2..387d94f 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -86,7 +86,7 @@ jobs:
     timeout-minutes: 60
     steps:
       - uses: actions/checkout@v7.0.1
-      - uses: taiki-e/install-action@v2.87.16
+      - uses: taiki-e/install-action@v2.87.20
         with:
           tool: cargo-deny
       - run: cargo deny check advisories bans licenses sources
@@ -109,7 +109,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: llvm-tools-preview
-      - uses: taiki-e/install-action@v2.87.16
+      - uses: taiki-e/install-action@v2.87.20
       - name: Generate lcov report
         run: cargo llvm-cov --workspace --lcov --output-path lcov.info
       - name: Enforce minimum coverage
@@ -127,7 +127,7 @@ jobs:
     steps:
       - uses: actions/checkout@v7.0.1
       - uses: dtolnay/rust-toolchain@stable
-      - uses: taiki-e/install-action@v2.87.16
+      - uses: taiki-e/install-action@v2.87.20
         with:
           tool: cargo-mutants
       - name: Run mutation tests on core invariant crates
diff --git a/.github/workflows/security-scan.yml b/.github/workflows/security-scan.yml
index 7ba188b..eaa39f0 100644
--- a/.github/workflows/security-scan.yml
+++ b/.github/workflows/security-scan.yml
@@ -40,6 +40,6 @@ jobs:
     #
     # Pin includes canonical .affine language detection and preserves
     # JSON.parseExn coverage after the ReScript-to-AffineScript migration.
-    uses: hyperpolymath/panic-attack/.github/workflows/scan-and-report.yml@27b3d93b11fbfc03cee695e791904d741ce2b24b # main 2026-08-24
+    uses: hyperpolymath/panic-attack/.github/workflows/scan-and-report.yml@edf782bc5e9810de623a9dcacfa672df6de641a0 # main 2026-08-24
     secrets:
       VERISIMDB_PAT: ${{ secrets.VERISIMDB_PAT }}