diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 949b13b..803e177 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -16,6 +16,14 @@ updates:
     open-pull-requests-limit: 2
 
   # Rust/Cargo
+    ignore:
+      # HOLD: github/codeql-action at v4.38.0 (SHA-pinned). v4.38.1 fails
+      # GitHub workflow-startup validation estate-wide (nexia-list#100;
+      # SHA-form re-bump bypassed versions-scoped ignores - see
+      # nexia-list#101/#104). Hold until upstream clears 4.38.1 or a
+      # newer release verifies green; revisit deliberately.
+      - dependency-name: "github/codeql-action"
+
   - package-ecosystem: "cargo"
     directory: "/"
     schedule:
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index b44e2d9..04751f7 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@v4.38.1
+        uses: github/codeql-action/init@b96794f015dfd88f77b49b1c93e0fa7110f94c63 # 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@v4.38.1
+        uses: github/codeql-action/analyze@b96794f015dfd88f77b49b1c93e0fa7110f94c63 # v4.38.0 (4.38.1 blocked estate-wide; nexia-list#100)
         with:
           category: "/language:${{ matrix.language }}"