diff --git a/lib/package.json b/lib/package.json
index 6f166eb99..223f313db 100644
--- a/lib/package.json
+++ b/lib/package.json
@@ -13,7 +13,7 @@
   "devDependencies": {
     "@esm-bundle/chai": "4.3.4-fix.0",
     "@open-wc/testing": "4.0.0",
-    "@web/test-runner": "0.19.0",
+    "@web/test-runner": "0.20.0",
     "@web/test-runner-junit-reporter": "0.7.2"
   },
   "scripts": {
diff --git a/yarn.lock b/yarn.lock
index e0b7b82e6..8bb57d7b7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4420,7 +4420,7 @@ __metadata:
   dependencies:
     "@esm-bundle/chai": "npm:4.3.4-fix.0"
     "@open-wc/testing": "npm:4.0.0"
-    "@web/test-runner": "npm:0.19.0"
+    "@web/test-runner": "npm:0.20.0"
     "@web/test-runner-junit-reporter": "npm:0.7.2"
     chart.js: "npm:4.4.7"
     chartjs-adapter-date-fns: "npm:3.0.0"
@@ -8299,6 +8299,19 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@web/test-runner-chrome@npm:^0.18.0":
+  version: 0.18.0
+  resolution: "@web/test-runner-chrome@npm:0.18.0"
+  dependencies:
+    "@web/test-runner-core": "npm:^0.13.0"
+    "@web/test-runner-coverage-v8": "npm:^0.8.0"
+    async-mutex: "npm:0.4.0"
+    chrome-launcher: "npm:^0.15.0"
+    puppeteer-core: "npm:^24.0.0"
+  checksum: 10c0/ea96533e5a7ab4cd394137181ef764df68611413a600cb7c46b0a83b1643a5dc38e338c5ba7115337f14ca0018aafb647e81fa4a6992808840824c66399985b3
+  languageName: node
+  linkType: hard
+
 "@web/test-runner-commands@npm:^0.9.0":
   version: 0.9.0
   resolution: "@web/test-runner-commands@npm:0.9.0"
@@ -8377,14 +8390,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@web/test-runner@npm:0.19.0":
-  version: 0.19.0
-  resolution: "@web/test-runner@npm:0.19.0"
+"@web/test-runner@npm:0.20.0":
+  version: 0.20.0
+  resolution: "@web/test-runner@npm:0.20.0"
   dependencies:
     "@web/browser-logs": "npm:^0.4.0"
     "@web/config-loader": "npm:^0.3.0"
     "@web/dev-server": "npm:^0.4.0"
-    "@web/test-runner-chrome": "npm:^0.17.0"
+    "@web/test-runner-chrome": "npm:^0.18.0"
     "@web/test-runner-commands": "npm:^0.9.0"
     "@web/test-runner-core": "npm:^0.13.0"
     "@web/test-runner-mocha": "npm:^0.9.0"
@@ -8400,7 +8413,7 @@ __metadata:
   bin:
     web-test-runner: dist/bin.js
     wtr: dist/bin.js
-  checksum: 10c0/580991533aa1df07725f24ff82b96c6e386dc0589f29d9221cde58ca52f70e45a889c1f707246b87b037a053a80564d39cb18c3366b3d4a4ce363da092411fb6
+  checksum: 10c0/0f8bbc2c362638f7c03f498d67168c0fa2ed4386b039da5ff2c8d026640e07865eecf2d2fd15f7b9da44c4a73b48b338825756200c8e546533a00f2b20989f07
   languageName: node
   linkType: hard
 
@@ -10236,6 +10249,18 @@ __metadata:
   languageName: node
   linkType: hard
 
+"chromium-bidi@npm:1.3.0":
+  version: 1.3.0
+  resolution: "chromium-bidi@npm:1.3.0"
+  dependencies:
+    mitt: "npm:^3.0.1"
+    zod: "npm:^3.24.1"
+  peerDependencies:
+    devtools-protocol: "*"
+  checksum: 10c0/97f1620f9cb925f045670bd55092f33b16642a7dcbbf91ae935ee4a9eb352ab2a8b5beb5080d5feb35fd663773ff3b882a3ebfd5475a9b1037a47dd9b7d05aee
+  languageName: node
+  linkType: hard
+
 "chunkd@npm:^2.0.1":
   version: 2.0.1
   resolution: "chunkd@npm:2.0.1"
@@ -19722,6 +19747,20 @@ __metadata:
   languageName: node
   linkType: hard
 
+"puppeteer-core@npm:^24.0.0":
+  version: 24.2.1
+  resolution: "puppeteer-core@npm:24.2.1"
+  dependencies:
+    "@puppeteer/browsers": "npm:2.7.1"
+    chromium-bidi: "npm:1.3.0"
+    debug: "npm:^4.4.0"
+    devtools-protocol: "npm:0.0.1402036"
+    typed-query-selector: "npm:^2.12.0"
+    ws: "npm:^8.18.0"
+  checksum: 10c0/6bc02274dceaee2ce55ab60fa347bbc67ca6dd0e72d28076a5f9ee3cbc7d9612484138732022fa3e1724f9fde55984ba4e132d0616633fb4f503ca16c56cb061
+  languageName: node
+  linkType: hard
+
 "puppeteer@npm:24.2.0":
   version: 24.2.0
   resolution: "puppeteer@npm:24.2.0"