diff --git a/package-lock.json b/package-lock.json
index c456006..3d4090f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -7912,7 +7912,8 @@
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-          "dev": true
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@@ -7936,13 +7937,15 @@
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           "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-          "dev": true
+          "dev": true,
+          "optional": true
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           "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
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           "dev": true,
+          "optional": true,
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@@ -7959,19 +7962,22 @@
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           "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
-          "dev": true
+          "dev": true,
+          "optional": true
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           "version": "0.0.1",
           "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
           "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-          "dev": true
+          "dev": true,
+          "optional": true
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           "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
           "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-          "dev": true
+          "dev": true,
+          "optional": true
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         "core-util-is": {
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@@ -8102,7 +8108,8 @@
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           "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=",
-          "dev": true
+          "dev": true,
+          "optional": true
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         "ini": {
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@@ -8116,6 +8123,7 @@
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           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -8132,6 +8140,7 @@
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           "dev": true,
+          "optional": true,
           "requires": {
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           }
@@ -8140,13 +8149,15 @@
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           "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
           "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "minipass": {
           "version": "2.3.5",
           "resolved": "https://registry.npmjs.org/minipass/-/minipass-2.3.5.tgz",
           "integrity": "sha512-Gi1W4k059gyRbyVUZQ4mEqLm0YIUiGYfvxhF6SIlk3ui1WVxMTGfGdQ2SInh3PDrRTVvPKgULkpJtT4RH10+VA==",
           "dev": true,
+          "optional": true,
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@@ -8167,6 +8178,7 @@
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           "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -8255,7 +8267,8 @@
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           "integrity": "sha1-CXtgK1NCKlIsGvuHkDGDNpQaAR0=",
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -8269,6 +8282,7 @@
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           "integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -8364,7 +8378,8 @@
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-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -8406,6 +8421,7 @@
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           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
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@@ -8427,6 +8443,7 @@
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           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -8475,13 +8492,15 @@
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           "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.3",
           "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
           "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
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@@ -13038,9 +13057,9 @@
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     "marked": {
-      "version": "0.5.2",
-      "resolved": "https://registry.npmjs.org/marked/-/marked-0.5.2.tgz",
-      "integrity": "sha512-fdZvBa7/vSQIZCi4uuwo2N3q+7jJURpMVCcbaX0S1Mg65WZ5ilXvC67MviJAsdjqqgD+CEq4RKo5AYGgINkVAA==",
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-4.0.10.tgz",
+      "integrity": "sha512-+QvuFj0nGgO970fySghXGmuw+Fd0gD2x3+MqCWLIPf5oxdv1Ka6b2q+z9RP01P/IaKPMEramy+7cNy/Lw8c3hw==",
       "dev": true
     },
     "matchdep": {
diff --git a/package.json b/package.json
index 0952070..15a30d4 100644
--- a/package.json
+++ b/package.json
@@ -85,7 +85,7 @@
     "json-loader": "^0.5.7",
     "lerna": "^3.13.1",
     "lint-staged": "^8.1.5",
-    "marked": "^0.5.2",
+    "marked": "^4.0.10",
     "mini-css-extract-plugin": "^0.4.4",
     "minimist": "^1.2.0",
     "mockdate": "^2.0.1",