diff --git a/package-lock.json b/package-lock.json
index 0803c13..ca99079 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -43,9 +43,9 @@
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+      "version": "6.0.5",
+      "resolved": "https://registry.npmjs.org/tar/-/tar-6.0.5.tgz",
+      "integrity": "sha512-0b4HOimQHj9nXNEAA7zWwMM91Zhhba3pspja6sQbgTpynOJf+bkjBnfybNYzbpLbnwXnbyB4LOREvlyXLkCHSg==",
       "dev": true,
       "requires": {
-        "block-stream": "*",
-        "fstream": "^1.0.12",
-        "inherits": "2"
+        "chownr": "^2.0.0",
+        "fs-minipass": "^2.0.0",
+        "minipass": "^3.0.0",
+        "minizlib": "^2.1.1",
+        "mkdirp": "^1.0.3",
+        "yallist": "^4.0.0"
+      },
+      "dependencies": {
+        "mkdirp": {
+          "version": "1.0.4",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.4.tgz",
+          "integrity": "sha512-vVqVZQyf3WLx2Shd0qJ9xuvqgAyKPLAiqITEtqW0oIUjzo3PePDd6fW9iFz30ef7Ysp/oiWqbhszeGWW2T6Gzw==",
+          "dev": true
+        }
       }
     },
     "to-regex-range": {
@@ -2529,9 +2554,9 @@
       "dev": true
     },
     "uri-js": {
-      "version": "4.2.2",
-      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
-      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
+      "version": "4.4.0",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.0.tgz",
+      "integrity": "sha512-B0yRTzYdUCCn9n+F4+Gh4yIDtMQcaJsmYBDsTSG8g/OejKBodLQ2IHfN3bM7jUsRXndopT7OIXWdYqc1fjmV6g==",
       "dev": true,
       "requires": {
         "punycode": "^2.1.0"
@@ -2652,9 +2677,9 @@
       "dev": true
     },
     "yallist": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
-      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
       "dev": true
     },
     "yargs": {
diff --git a/package.json b/package.json
index 28a3b82..e591443 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   "devDependencies": {
     "autoprefixer": "^9.8.0",
     "concat": "^1.0.3",
-    "node-sass": "^4.14.1",
+    "node-sass": "^5.0.0",
     "npm-run-all": "^4.1.5",
     "postcss-cli": "^7.1.1"
   }