diff --git a/package-lock.json b/package-lock.json
index d0a388a..01b54bd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4228,7 +4228,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -4249,12 +4250,14 @@
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "balanced-match": "^1.0.0",
             "concat-map": "0.0.1"
@@ -4269,17 +4272,20 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -4396,7 +4402,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.5",
@@ -4408,6 +4415,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "^1.0.0"
           }
@@ -4422,6 +4430,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "^1.1.7"
           }
@@ -4429,12 +4438,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "^5.1.2",
             "yallist": "^3.0.0"
@@ -4453,6 +4464,7 @@
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -4533,7 +4545,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -4545,6 +4558,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1"
           }
@@ -4630,7 +4644,8 @@
         "safe-buffer": {
           "version": "5.1.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -4666,6 +4681,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "^1.0.0",
             "is-fullwidth-code-point": "^1.0.0",
@@ -4685,6 +4701,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -4728,12 +4745,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -5169,9 +5188,9 @@
       "integrity": "sha1-jhzkvvNqdPfVcjw/swkMKGAHczg="
     },
     "highlight.js": {
-      "version": "9.15.10",
-      "resolved": "https://registry.npm.taobao.org/highlight.js/download/highlight.js-9.15.10.tgz",
-      "integrity": "sha1-exjtdckDSMBF7vntCMoTGaIhmtI="
+      "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=="
     },
     "home-or-tmp": {
       "version": "2.0.0",
diff --git a/package.json b/package.json
index 38f4962..1809183 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "etag": "^1.8.1",
     "express": "^4.16.4",
     "gunzip-maybe": "^1.4.1",
-    "highlight.js": "^9.15.8",
+    "highlight.js": "^10.4.1",
     "isomorphic-fetch": "^2.2.1",
     "jsesc": "^2.5.2",
     "lru-cache": "^5.1.1",
diff --git a/yarn.lock b/yarn.lock
index 304eba0..eeb50a9 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3395,10 +3395,10 @@ hex2dec@^1.0.1:
   resolved "https://registry.yarnpkg.com/hex2dec/-/hex2dec-1.1.2.tgz#8e1ce4bef36a74f7d5723c3fb3090c2860077338"
   integrity sha512-Yu+q/XWr2fFQ11tHxPq4p4EiNkb2y+lAacJNhAdRXVfRIcDH6gi7htWFnnlIzvqHMHoWeIsfXlNAjZInpAOJDA==
 
-highlight.js@^9.15.8:
-  version "9.15.8"
-  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-9.15.8.tgz#f344fda123f36f1a65490e932cf90569e4999971"
-  integrity sha512-RrapkKQWwE+wKdF73VsOa2RQdIoO3mxwJ4P8mhbI6KYJUraUHRKM5w5zQQKXNk0xNL4UVRdulV9SBJcmzJNzVA==
+highlight.js@^10.4.1:
+  version "10.4.1"
+  resolved "https://registry.yarnpkg.com/highlight.js/-/highlight.js-10.4.1.tgz#d48fbcf4a9971c4361b3f95f302747afe19dbad0"
+  integrity sha512-yR5lWvNz7c85OhVAEAeFhVCc/GV4C30Fjzc/rCP0aCWzc1UUOPUk55dK/qdwTZHBvMZo+eZ2jpk62ndX/xMFlg==
 
 home-or-tmp@^2.0.0:
   version "2.0.0"