diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index f5d3847b5..245ba9fec 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -16,8 +16,13 @@ jobs:
       - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
         id: filter
         with:
+          # Exclusion-only patterns match every non-excluded file under the
+          # default "some" quantifier. Require all patterns (including "**")
+          # so docs-only / markdown-only PRs correctly set code=false.
+          predicate-quantifier: every
           filters: |
             code:
+              - '**'
               - '!docs/**'
               - '!**/*.md'
 
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 008ac6ccb..1e4d77a60 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,8 +16,13 @@ jobs:
       - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
         id: filter
         with:
+          # Exclusion-only patterns match every non-excluded file under the
+          # default "some" quantifier. Require all patterns (including "**")
+          # so docs-only / markdown-only PRs correctly set code=false.
+          predicate-quantifier: every
           filters: |
             code:
+              - '**'
               - '!docs/**'
               - '!**/*.md'
 
diff --git a/.github/workflows/type-checker.yml b/.github/workflows/type-checker.yml
index d60cb4f95..a9088381b 100644
--- a/.github/workflows/type-checker.yml
+++ b/.github/workflows/type-checker.yml
@@ -16,8 +16,13 @@ jobs:
       - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
         id: filter
         with:
+          # Exclusion-only patterns match every non-excluded file under the
+          # default "some" quantifier. Require all patterns (including "**")
+          # so docs-only / markdown-only PRs correctly set code=false.
+          predicate-quantifier: every
           filters: |
             code:
+              - '**'
               - '!docs/**'
               - '!**/*.md'
 
diff --git a/.github/workflows/vulnerability-scan.yml b/.github/workflows/vulnerability-scan.yml
index bfb3c1db1..2f9834edc 100644
--- a/.github/workflows/vulnerability-scan.yml
+++ b/.github/workflows/vulnerability-scan.yml
@@ -12,8 +12,40 @@ permissions:
   contents: read
 
 jobs:
+  changes:
+    name: Detect changes
+    runs-on: ubuntu-latest
+    outputs:
+      code: ${{ steps.set.outputs.code }}
+    steps:
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+        if: github.event_name == 'pull_request'
+      - uses: dorny/paths-filter@d1c1ffe0248fe513906c8e24db8ea791d46f8590 # v3
+        id: filter
+        if: github.event_name == 'pull_request'
+        with:
+          # Exclusion-only patterns match every non-excluded file under the
+          # default "some" quantifier. Require all patterns (including "**")
+          # so docs-only / markdown-only PRs correctly set code=false.
+          predicate-quantifier: every
+          filters: |
+            code:
+              - '**'
+              - '!docs/**'
+              - '!**/*.md'
+      - name: Set code output
+        id: set
+        run: |
+          if [ "${{ github.event_name }}" != "pull_request" ]; then
+            echo "code=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "code=${{ steps.filter.outputs.code }}" >> "$GITHUB_OUTPUT"
+          fi
+
   pip-audit:
     name: pip-audit
+    needs: changes
+    if: needs.changes.outputs.code == 'true'
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1