diff --git a/package.json b/package.json
index 30811a7..7f7c501 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "eslint": "4.18.2",
     "gh-pages": "^3.1.0",
     "jsdoc": "^3.6.6",
-    "marked": "^0.3.9",
+    "marked": "^4.0.10",
     "prettier": "^1.3.1",
     "repl": "0.1.3",
     "tap-spec": "4.1.1",
diff --git a/yarn.lock b/yarn.lock
index 214d149..87bcc7b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1147,15 +1147,16 @@ markdown-it@^10.0.0:
     mdurl "^1.0.1"
     uc.micro "^1.0.5"
 
-marked@^0.3.9:
-  version "0.3.19"
-  resolved "https://registry.yarnpkg.com/marked/-/marked-0.3.19.tgz#5d47f709c4c9fc3c216b6d46127280f40b39d790"
-
 marked@^0.8.2:
   version "0.8.2"
   resolved "https://registry.yarnpkg.com/marked/-/marked-0.8.2.tgz#4faad28d26ede351a7a1aaa5fec67915c869e355"
   integrity sha512-EGwzEeCcLniFX51DhTpmTom+dSA/MG/OBUDjnWtHbEnjAH180VzUeAw+oE4+Zv+CoYBWyRlYOTR0N8SO9R1PVw==
 
+marked@^4.0.10:
+  version "4.0.10"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-4.0.10.tgz#423e295385cc0c3a70fa495e0df68b007b879423"
+  integrity sha512-+QvuFj0nGgO970fySghXGmuw+Fd0gD2x3+MqCWLIPf5oxdv1Ka6b2q+z9RP01P/IaKPMEramy+7cNy/Lw8c3hw==
+
 mdurl@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/mdurl/-/mdurl-1.0.1.tgz#fe85b2ec75a59037f2adfec100fd6c601761152e"