diff --git a/package-lock.json b/package-lock.json
index d3d544a..764cafd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1519,21 +1519,93 @@
       }
     },
     "@open-wc/karma-esm": {
-      "version": "2.16.12",
-      "resolved": "https://registry.npmjs.org/@open-wc/karma-esm/-/karma-esm-2.16.12.tgz",
-      "integrity": "sha512-OULIFOcOwfJNY7NFRjWMNFKdv09BapOt9wgpsybM8nO6SyR90Q+tzeHoOfghFwgPY83Jq3+SDJcuq2unQ6BLhQ==",
+      "version": "2.16.14",
+      "resolved": "https://registry.npmjs.org/@open-wc/karma-esm/-/karma-esm-2.16.14.tgz",
+      "integrity": "sha512-n0i59gRzWWqwwKUxKy+fAlfN/nJ2w2bUNPU+N2rivqJxBxUqzRCEP2d7a65zR/DAgD0yavoWJpt+6iaXMI12Gg==",
       "dev": true,
       "requires": {
         "@open-wc/building-utils": "^2.18.0",
         "babel-plugin-istanbul": "^5.1.4",
         "chokidar": "^3.0.0",
         "deepmerge": "^4.2.2",
-        "es-dev-server": "^1.54.0",
+        "es-dev-server": "^1.55.0",
         "minimatch": "^3.0.4",
         "node-fetch": "^2.6.0",
         "polyfills-loader": "^1.6.1",
         "portfinder": "^1.0.21",
         "request": "^2.88.0"
+      },
+      "dependencies": {
+        "es-dev-server": {
+          "version": "1.55.0",
+          "resolved": "https://registry.npmjs.org/es-dev-server/-/es-dev-server-1.55.0.tgz",
+          "integrity": "sha512-D4be5MVGBDw2/OO79xCTw1qqMbttao8SovhRelhUQ7+dFaInF/dC+so6vJKuuTFvVRpSVXF320F/0rMJ8R5FcA==",
+          "dev": true,
+          "requires": {
+            "@babel/core": "^7.9.0",
+            "@babel/plugin-proposal-dynamic-import": "^7.8.3",
+            "@babel/plugin-proposal-nullish-coalescing-operator": "^7.8.3",
+            "@babel/plugin-proposal-optional-chaining": "^7.9.0",
+            "@babel/plugin-syntax-class-properties": "^7.8.3",
+            "@babel/plugin-syntax-import-meta": "^7.8.3",
+            "@babel/plugin-syntax-nullish-coalescing-operator": "^7.8.3",
+            "@babel/plugin-syntax-numeric-separator": "^7.8.3",
+            "@babel/plugin-syntax-optional-chaining": "^7.8.3",
+            "@babel/plugin-transform-template-literals": "^7.8.3",
+            "@babel/preset-env": "^7.9.0",
+            "@open-wc/building-utils": "^2.18.0",
+            "@rollup/plugin-node-resolve": "^7.1.1",
+            "@rollup/pluginutils": "^3.0.0",
+            "@types/babel__core": "^7.1.3",
+            "@types/browserslist": "^4.8.0",
+            "@types/browserslist-useragent": "^3.0.0",
+            "@types/caniuse-api": "^3.0.0",
+            "@types/command-line-args": "^5.0.0",
+            "@types/command-line-usage": "^5.0.1",
+            "@types/debounce": "^1.2.0",
+            "@types/koa": "^2.0.48",
+            "@types/koa-compress": "^2.0.9",
+            "@types/koa-etag": "^3.0.0",
+            "@types/koa-static": "^4.0.1",
+            "@types/lru-cache": "^5.1.0",
+            "@types/minimatch": "^3.0.3",
+            "@types/path-is-inside": "^1.0.0",
+            "@types/whatwg-url": "^6.4.0",
+            "browserslist": "^4.9.1",
+            "browserslist-useragent": "^3.0.2",
+            "builtin-modules": "^3.1.0",
+            "camelcase": "^5.3.1",
+            "caniuse-api": "^3.0.0",
+            "caniuse-lite": "^1.0.30001033",
+            "chokidar": "^3.0.0",
+            "command-line-args": "^5.0.2",
+            "command-line-usage": "^6.1.0",
+            "debounce": "^1.2.0",
+            "deepmerge": "^4.2.2",
+            "es-module-lexer": "^0.3.13",
+            "get-stream": "^5.1.0",
+            "is-stream": "^2.0.0",
+            "isbinaryfile": "^4.0.2",
+            "koa": "^2.7.0",
+            "koa-compress": "^3.0.0",
+            "koa-etag": "^3.0.0",
+            "koa-static": "^5.0.0",
+            "lru-cache": "^5.1.1",
+            "mime-types": "^2.1.27",
+            "minimatch": "^3.0.4",
+            "open": "^7.0.3",
+            "parse5": "^5.1.1",
+            "path-is-inside": "^1.0.2",
+            "polyfills-loader": "^1.6.1",
+            "portfinder": "^1.0.21",
+            "rollup": "^2.7.2",
+            "strip-ansi": "^5.2.0",
+            "systemjs": "^6.3.1",
+            "tslib": "^1.11.1",
+            "useragent": "^2.3.0",
+            "whatwg-url": "^7.0.0"
+          }
+        }
       }
     },
     "@open-wc/prettier-config": {
@@ -1622,12 +1694,12 @@
       }
     },
     "@open-wc/testing-karma": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/@open-wc/testing-karma/-/testing-karma-3.4.1.tgz",
-      "integrity": "sha512-ECtU7r9YmrFcuwomH64pBypR73RSZ15f9tWKhJ+cxJhRNqgiDK3NbMcVGP+yKUVwmPIIOBAZbk8+Ea62wA882A==",
+      "version": "3.4.4",
+      "resolved": "https://registry.npmjs.org/@open-wc/testing-karma/-/testing-karma-3.4.4.tgz",
+      "integrity": "sha512-rlXsQECBktku4PN0QiCVHW04B0kBRzyYlK71yLDOskBWTLAEdxN7A6wQKvNU58cgjQe5lzP8AyAgAqWKu7yx1A==",
       "dev": true,
       "requires": {
-        "@open-wc/karma-esm": "^2.16.12",
+        "@open-wc/karma-esm": "^2.16.14",
         "@types/karma": "^5.0.0",
         "@types/karma-coverage-istanbul-reporter": "^2.1.0",
         "@types/karma-mocha": "^1.3.0",
diff --git a/package.json b/package.json
index 2e0257f..debba3f 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
     "@open-wc/prettier-config": "^1.1.0",
     "husky": "^4.2.5",
     "lint-staged": "^10.2.9",
-    "@open-wc/testing-karma": "^3.4.1",
+    "@open-wc/testing-karma": "^3.4.4",
     "webpack-merge": "^4.2.2",
     "@open-wc/testing-karma-bs": "^1.3.77",
     "@open-wc/testing": "^2.5.17",