diff --git a/package-lock.json b/package-lock.json
index bb9cb75..7a5efe0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1599,7 +1599,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.2.0",
@@ -2014,7 +2015,8 @@
         "safe-buffer": {
           "version": "5.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "safer-buffer": {
           "version": "2.1.2",
@@ -2070,6 +2072,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -2113,12 +2116,14 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "yallist": {
           "version": "3.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         }
       }
     },
@@ -3051,9 +3056,9 @@
       }
     },
     "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=="
     },
     "media-typer": {
       "version": "0.3.0",
diff --git a/package.json b/package.json
index b74467f..3fb8362 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "express": "^4.16.4",
     "express-session": "^1.15.6",
     "helmet": "^3.15.0",
-    "marked": "^0.5.2",
+    "marked": "^4.0.10",
     "moment": "^2.22.2",
     "moment-duration-format": "^2.2.2",
     "mongodb": "^3.1.10",