diff --git a/package-lock.json b/package-lock.json
index 554c0ea..3d1ba6c 100644
--- a/package-lock.json
+++ b/package-lock.json
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+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.18.1.tgz",
+      "integrity": "sha512-OIAYXk8+ISY+qTOwkHtKqzAuxchoMiD9Udx+FSGQDuiRR+PJKJHc2NJAXlbhkGwTt/4/nKZxELY1w3ReWOL8mw==",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.16.tgz",
@@ -12115,13 +13219,15 @@
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-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "unicode-match-property-ecmascript": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/unicode-match-property-ecmascript/-/unicode-match-property-ecmascript-1.0.4.tgz",
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       "dev": true,
+      "optional": true,
       "requires": {
         "unicode-canonical-property-names-ecmascript": "^1.0.4",
         "unicode-property-aliases-ecmascript": "^1.0.4"
@@ -12131,13 +13237,15 @@
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-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "unicode-property-aliases-ecmascript": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.5.tgz",
       "integrity": "sha512-L5RAqCfXqAwR3RriF8pM0lU0w4Ryf/GgzONwi6KnL1taJQa7x1TCxdJnILX59WIGOwR57IVxn7Nej0fz1Ny6fw==",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "union-value": {
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@@ -12842,7 +13950,8 @@
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/which-module/-/which-module-1.0.0.tgz",
       "integrity": "sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "wide-align": {
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@@ -12930,6 +14039,7 @@
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       "integrity": "sha1-a6MY6xaWFyf10oT46gA+jWFU0Mg=",
       "dev": true,
+      "optional": true,
       "requires": {
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         "cliui": "^3.2.0",
@@ -12950,13 +14060,15 @@
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           "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-3.0.0.tgz",
           "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "y18n": {
           "version": "3.2.1",
           "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
           "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -12965,6 +14077,7 @@
       "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-5.0.0.tgz",
       "integrity": "sha1-J17PDX/+Bcd+ZOfIbkzZS/DhIoo=",
       "dev": true,
+      "optional": true,
       "requires": {
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@@ -12973,7 +14086,8 @@
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           "integrity": "sha1-MvxLn82vhF/N9+c7uXysImHwqwo=",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
diff --git a/package.json b/package.json
index e23309e..0a5706e 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "karma-coverage-istanbul-reporter": "~2.0.1",
     "karma-jasmine": "~1.1.2",
     "karma-jasmine-html-reporter": "^0.2.2",
-    "node-sass": "^4.11.0",
+    "node-sass": "^7.0.0",
     "ts-loader": "5.3.3",
     "ts-node": "~7.0.0",
     "tslint": "~5.11.0",