diff --git a/package-lock.json b/package-lock.json
index 06e6b75..e294f2d 100644
--- a/package-lock.json
+++ b/package-lock.json
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-      "resolved": "https://registry.npmjs.org/to-array/-/to-array-0.1.4.tgz",
-      "integrity": "sha1-F+bBH3PdTz10zaek/zI46a2b+JA=",
-      "dev": true
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       "resolved": "https://registry.npmjs.org/to-arraybuffer/-/to-arraybuffer-1.0.1.tgz",
@@ -21926,6 +22185,12 @@
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+    "toidentifier": {
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+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
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+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/toposort/-/toposort-1.0.7.tgz",
@@ -22153,12 +22418,6 @@
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-    "ultron": {
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-      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
-      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og==",
-      "dev": true
-    },
     "unc-path-regex": {
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       "resolved": "https://registry.npmjs.org/unc-path-regex/-/unc-path-regex-0.1.2.tgz",
@@ -22420,16 +22679,6 @@
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-    "useragent": {
-      "version": "2.3.0",
-      "resolved": "https://registry.npmjs.org/useragent/-/useragent-2.3.0.tgz",
-      "integrity": "sha512-4AoH4pxuSvHCjqLO04sU6U/uE65BYza8l/KKBS0b0hnUPWi+cQ2BpeTEwejCSx9SPV5/U03nniDTrWx5NrmKdw==",
-      "dev": true,
-      "requires": {
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-        "tmp": "0.0.x"
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       "resolved": "https://registry.npmjs.org/util/-/util-0.10.4.tgz",
@@ -22529,7 +22778,7 @@
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       "resolved": "https://registry.npmjs.org/void-elements/-/void-elements-2.0.1.tgz",
-      "integrity": "sha1-wGavtYK7HLQSjWDqkjkulNXp2+w=",
+      "integrity": "sha512-qZKX4RnBzH2ugr8Lxa7x+0V6XD9Sb/ouARtiasEQCHB1EVU4NXtmHsDDrx1dO4ne5fc3J6EW05BP1Dl0z0iung==",
       "dev": true
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     "w3c-hr-time": {
@@ -23784,12 +24033,6 @@
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       "dev": true
     },
-    "xmlhttprequest-ssl": {
-      "version": "1.5.5",
-      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-1.5.5.tgz",
-      "integrity": "sha1-wodrBhaKrcQOV9l+gRkayPQ5iz4=",
-      "dev": true
-    },
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       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
@@ -23853,12 +24096,6 @@
           "dev": true
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-    "yeast": {
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-      "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
-      "integrity": "sha1-AI4G2AlDIMNy28L47XagymyKxBk=",
-      "dev": true
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 }
diff --git a/package.json b/package.json
index 50249fa..1c0214f 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     "istanbul-instrumenter-loader": "^3.0.1",
     "jsdom": "^11.11.0",
     "jsdom-global": "^3.0.2",
-    "karma": "^4.2.0",
+    "karma": "^6.4.1",
     "karma-chrome-launcher": "^2.2.0",
     "karma-mocha": "^1.3.0",
     "karma-mocha-reporter": "^2.2.5",