diff --git a/package-lock.json b/package-lock.json
index 4eaf81d4..2ed3af64 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,7 +11,7 @@
         "@axe-core/playwright": "^4.10.0",
         "@playwright/test": "^1.62.1",
         "force-graph": "1.51.4",
-        "impeccable": "3.5.0"
+        "impeccable": "3.6.0"
       }
     },
     "node_modules/@axe-core/playwright": {
@@ -727,9 +727,9 @@
       }
     },
     "node_modules/impeccable": {
-      "version": "3.5.0",
-      "resolved": "https://registry.npmjs.org/impeccable/-/impeccable-3.5.0.tgz",
-      "integrity": "sha512-mpm428oMTESAXKvHCCI+GsvhwAw2kTKtrnwsflLIyem6krMo2KoaH4RwRY7ke5JvtwAfYpu58AiIlptLOuKbzg==",
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/impeccable/-/impeccable-3.6.0.tgz",
+      "integrity": "sha512-nysc6/2OHTWqLrcSxTxZk4r4QMufhU8NTIuG2ic6p5zzyZe45AWBX3/18OA5S88pCWq+4z8pKsjUxhAM990RKg==",
       "dev": true,
       "license": "Apache-2.0",
       "dependencies": {
@@ -744,7 +744,7 @@
         "impeccable": "cli/bin/cli.js"
       },
       "engines": {
-        "node": ">=22.12.0"
+        "node": ">=22.18.0"
       },
       "optionalDependencies": {
         "puppeteer": "^25.1.0"
diff --git a/package.json b/package.json
index 375ead3b..83467b18 100644
--- a/package.json
+++ b/package.json
@@ -1 +1 @@
-{"name":"engraphis-tests","version":"1.0.0","private":true,"description":"Browser accessibility, e2e, vendored bundle provenance, and design-quality dependencies for Engraphis","scripts":{"test:e2e":"playwright test"},"devDependencies":{"@playwright/test":"^1.62.1","@axe-core/playwright":"^4.10.0","force-graph":"1.51.4","impeccable":"3.5.0"}}
\ No newline at end of file
+{"name":"engraphis-tests","version":"1.0.0","private":true,"description":"Browser accessibility, e2e, vendored bundle provenance, and design-quality dependencies for Engraphis","scripts":{"test:e2e":"playwright test"},"devDependencies":{"@playwright/test":"^1.62.1","@axe-core/playwright":"^4.10.0","force-graph":"1.51.4","impeccable":"3.6.0"}}
\ No newline at end of file
diff --git a/tests/test_dashboard_vendor_assets.py b/tests/test_dashboard_vendor_assets.py
index 9393e0e3..3b213082 100644
--- a/tests/test_dashboard_vendor_assets.py
+++ b/tests/test_dashboard_vendor_assets.py
@@ -43,5 +43,5 @@ def test_design_linter_dependency_is_exactly_pinned():
     package = json.loads((ROOT / "package.json").read_text(encoding="utf-8"))
     package_lock = json.loads((ROOT / "package-lock.json").read_text(encoding="utf-8"))
     version = package["devDependencies"]["impeccable"]
-    assert version == "3.5.0"
+    assert version == "3.6.0"
     assert package_lock["packages"]["node_modules/impeccable"]["version"] == version
diff --git a/tests/test_release_infrastructure.py b/tests/test_release_infrastructure.py
index 120105bb..cc1fabc9 100644
--- a/tests/test_release_infrastructure.py
+++ b/tests/test_release_infrastructure.py
@@ -63,9 +63,9 @@ def test_dependency_automation_covers_every_root_ecosystem():
     )
     package = json.loads(_text("package.json"))
     lock = json.loads(_text("package-lock.json"))
-    assert package["devDependencies"]["impeccable"] == "3.5.0"
-    assert lock["packages"][""]["devDependencies"]["impeccable"] == "3.5.0"
-    assert lock["packages"]["node_modules/impeccable"]["version"] == "3.5.0"
+    assert package["devDependencies"]["impeccable"] == "3.6.0"
+    assert lock["packages"][""]["devDependencies"]["impeccable"] == "3.6.0"
+    assert lock["packages"]["node_modules/impeccable"]["version"] == "3.6.0"
 
 
 def test_playwright_server_never_opens_the_developers_configured_database():