diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 5ace460..b4ea077 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -4,3 +4,14 @@ updates:
     directory: "/"
     schedule:
       interval: "weekly"
+    # Group all Action bumps into ONE PR. github/codeql-action is a monorepo:
+    # its init/analyze/upload-sarif sub-actions MUST move in lockstep (the
+    # workflows pin them to one SHA, and codeql-action rejects an init/analyze
+    # version mismatch). Ungrouped, dependabot opened a separate PR per
+    # sub-action, so each one alone created a version skew that failed CI and
+    # could not be merged without breaking main. A single grouped PR keeps them
+    # in sync.
+    groups:
+      github-actions:
+        patterns:
+          - "*"
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index fe06e8b..a8c7069 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0  # v7.0.0
 
-      - uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+      - uses: github/codeql-action/init@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a  # v4.36.3
         with:
           languages: c-cpp
           queries: security-and-quality
@@ -31,6 +31,6 @@ jobs:
       - name: Build
         run: make EIGENSCRIPT_VERSION=codeql
 
-      - uses: github/codeql-action/analyze@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+      - uses: github/codeql-action/analyze@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a  # v4.36.3
         with:
           category: "/language:c-cpp"
diff --git a/.github/workflows/scorecard.yml b/.github/workflows/scorecard.yml
index 7f1265f..10cadcb 100644
--- a/.github/workflows/scorecard.yml
+++ b/.github/workflows/scorecard.yml
@@ -40,6 +40,6 @@ jobs:
           retention-days: 5
 
       - name: Upload to code-scanning
-        uses: github/codeql-action/upload-sarif@8aad20d150bbac5944a9f9d289da16a4b0d87c1e  # v4.36.2
+        uses: github/codeql-action/upload-sarif@54f647b7e1bb85c95cddabcd46b0c578ec92bc1a  # v4.36.3
         with:
           sarif_file: results.sarif