diff --git a/package-lock.json b/package-lock.json
index 32ad399..883f0bf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -74,7 +74,8 @@
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       "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
-      "dev": true
+      "dev": true,
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@@ -414,7 +415,8 @@
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       "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -593,7 +595,8 @@
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       "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
-      "dev": true
+      "dev": true,
+      "optional": true
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@@ -687,7 +690,7 @@
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-          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
           "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
           "dev": true,
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@@ -869,7 +872,7 @@
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           "version": "4.3.0",
-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
           "integrity": "sha1-79nEpuxT87BUEkKZFcPkgk5NJaQ=",
           "dev": true
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@@ -898,7 +901,7 @@
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-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.3.0.tgz",
           "integrity": "sha1-79nEpuxT87BUEkKZFcPkgk5NJaQ=",
           "dev": true
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@@ -923,7 +926,7 @@
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         "lodash": {
           "version": "2.4.2",
-          "resolved": "http://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
           "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4=",
           "dev": true
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@@ -968,9 +971,9 @@
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-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.8.0.tgz",
-      "integrity": "sha1-OO7vQM1F6t2+yMnlI4+3p4OjtoU=",
+      "version": "10.4.1",
+      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.4.1.tgz",
+      "integrity": "sha512-yR5lWvNz7c85OhVAEAeFhVCc/GV4C30Fjzc/rCP0aCWzc1UUOPUk55dK/qdwTZHBvMZo+eZ2jpk62ndX/xMFlg==",
       "dev": true
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@@ -1119,7 +1122,8 @@
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       "resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
       "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "jade": {
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@@ -1313,13 +1317,15 @@
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       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.36.0.tgz",
       "integrity": "sha512-L+xvyD9MkoYMXb1jAmzI/lWYAxAMCPvIBSWur0PZ5nOf5euahRLVqH//FKW9mWp2lkqUgYiXPgkzfMUFi4zVDw==",
-      "dev": true
+      "dev": true,
+      "optional": true
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     "mime-types": {
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       "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.20.tgz",
       "integrity": "sha512-HrkrPaP9vGuWbLK1B1FfgAkbqNjIuy4eHlIYnFi7kamZyLLrGlo2mpcx0bBmNpKqBtYtAfGbodDddIgddSJC2A==",
       "dev": true,
+      "optional": true,
       "requires": {
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       }
@@ -1694,7 +1700,8 @@
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       "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "safer-buffer": {
       "version": "2.1.2",
diff --git a/package.json b/package.json
index b363780..86529b8 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
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     "grunt-contrib-copy": "1.0.0",
     "grunt-markdown": "0.7.0",
-    "highlight.js": "9.8.0",
+    "highlight.js": "10.4.1",
     "js-yaml": "3.7.0"
   },
   "peerDependencies": {