diff --git a/package-lock.json b/package-lock.json
index f42274b..82ebfd2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -303,16 +303,16 @@
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     },
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-      "version": "8.9.1",
-      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-8.9.1.tgz",
-      "integrity": "sha1-uKnFSTISqTkvAiK2SclhFJfr+4g="
+      "version": "9.18.5",
+      "resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-9.18.5.tgz",
+      "integrity": "sha512-a5bFyofd/BHCX52/8i8uJkjr9DYwXIPnM/plwI6W7ezItLGqzt7X2G2nXuYSfsIJdkwwj/g9DG1LkcGJI/dDoA=="
     },
     "highlighter": {
-      "version": "0.0.3",
-      "resolved": "https://registry.npmjs.org/highlighter/-/highlighter-0.0.3.tgz",
-      "integrity": "sha1-vnp2NMUMLGXJPdKxs/dhkeSafws=",
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/highlighter/-/highlighter-0.1.0.tgz",
+      "integrity": "sha1-B6QUC65Qqzx/8Zjy0JSziSDMq7I=",
       "requires": {
-        "highlight.js": "^8.4.0"
+        "highlight.js": "^9.7.0"
       }
     },
     "inflight": {
@@ -567,9 +567,9 @@
       "integrity": "sha1-bUUk6LlV+V1PW1iFHOId1y+06VI="
     },
     "marked": {
-      "version": "0.3.15",
-      "resolved": "https://registry.npmjs.org/marked/-/marked-0.3.15.tgz",
-      "integrity": "sha512-PToZtmCYVf4mlkmfoDPpsg3VJhkEvCHeTXSxbG3FBBxEoLAlxAsYPCADWx4+XBebMXCowDW7vaOGfRVjmFDM5w=="
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-0.6.3.tgz",
+      "integrity": "sha512-Fqa7eq+UaxfMriqzYLayfqAE40WN03jf+zHjT18/uXNuzjq3TY0XTbrAoPeqSJrAmPz11VuUA+kBPYOhHt9oOQ=="
     },
     "merge": {
       "version": "1.2.0",
@@ -658,28 +658,32 @@
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     },
     "metalsmith-copy": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/metalsmith-copy/-/metalsmith-copy-0.2.1.tgz",
-      "integrity": "sha1-FzOtxlYICZNNKJvKXNTZ+qs1bgI=",
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/metalsmith-copy/-/metalsmith-copy-0.4.1.tgz",
+      "integrity": "sha512-9Xs+gd/fH5G+6OEctPVPJa0kfZgB/iWzcnLW9TBByIC4uVIpV33c0h9/oJTQfHBNY0i0tf41s7tdaMPYsr1gfw==",
       "requires": {
-        "debug": "^0.8.1",
-        "lodash": "^2.4.1",
-        "minimatch": "^0.2.14"
+        "debug": "^3.1.0",
+        "lodash": "^4.17.10",
+        "minimatch": "^3.0.2"
       },
       "dependencies": {
-        "lodash": {
-          "version": "2.4.2",
-          "resolved": "https://registry.npmjs.org/lodash/-/lodash-2.4.2.tgz",
-          "integrity": "sha1-+t2DS5aDBz2hebPq5tnA0VBT9z4="
-        },
-        "minimatch": {
-          "version": "0.2.14",
-          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.2.14.tgz",
-          "integrity": "sha1-x054BXT2PG+aCQ6Q775u9TpqdWo=",
+        "debug": {
+          "version": "3.2.7",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.7.tgz",
+          "integrity": "sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==",
           "requires": {
-            "lru-cache": "2",
-            "sigmund": "~1.0.0"
+            "ms": "^2.1.1"
           }
+        },
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+        },
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
         }
       }
     },
@@ -744,18 +748,26 @@
       }
     },
     "metalsmith-markdown": {
-      "version": "0.2.2",
-      "resolved": "https://registry.npmjs.org/metalsmith-markdown/-/metalsmith-markdown-0.2.2.tgz",
-      "integrity": "sha1-+GO3ycCyzVvwNO4ImbDlqM3h69M=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/metalsmith-markdown/-/metalsmith-markdown-1.2.0.tgz",
+      "integrity": "sha512-YAZZ1G4Y+AfnlJEoba6sr8zGBxg2xiAetf2xvGCTOpUR5CKV6G+X3Oq0BcS1aKBLYf86rWmm6Nu0Wq/5O2CEMQ==",
       "requires": {
-        "debug": "~0.7.4",
-        "marked": "~0.3.9"
+        "debug": "^4.1.1",
+        "marked": "^0.6.1"
       },
       "dependencies": {
         "debug": {
-          "version": "0.7.4",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-0.7.4.tgz",
-          "integrity": "sha1-BuHqgILCyxTjmAbiLi9vdX+Srzk="
+          "version": "4.3.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+          "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
+          "requires": {
+            "ms": "2.1.2"
+          }
+        },
+        "ms": {
+          "version": "2.1.2",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+          "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         }
       }
     },
diff --git a/package.json b/package.json
index e77ac10..0d35ca1 100644
--- a/package.json
+++ b/package.json
@@ -17,17 +17,17 @@
   "license": "SEE LICENSE IN license.md",
   "dependencies": {
     "handlebars": "^4.7.7",
-    "highlighter": "0.0.3",
+    "highlighter": "0.1.0",
     "jsonfile": "^2.3.1",
     "lodash": "^4.17.5",
     "metalsmith": "^2.1.0",
     "metalsmith-assets": "^0.1.0",
     "metalsmith-collections": "^0.9.0",
-    "metalsmith-copy": "^0.2.1",
+    "metalsmith-copy": "^0.4.1",
     "metalsmith-discover-partials": "^0.1.0",
     "metalsmith-in-place": "^1.4.4",
     "metalsmith-layouts": "1.5.4",
-    "metalsmith-markdown": "^0.2.2",
+    "metalsmith-markdown": "^1.2.0",
     "metalsmith-metadata": "0.0.4",
     "metalsmith-navigation": "^0.2.9",
     "metalsmith-permalinks": "^0.5.0",