diff --git a/package.json b/package.json
index 6d9e3207e..140b688af 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "doc": "node lib/main/build-doc github && npm run test:doc",
     "doc:fp": "node lib/fp/build-doc",
     "doc:site": "node lib/main/build-doc site",
-    "doc:sitehtml": "npm run doc:site && node lib/main/build-site",
+    "doc:sitehtml": "optional-dev-dependency marky-markdown@^7.0.1 && npm run doc:site && node lib/main/build-site",
     "prepublish": "npm run build",
     "pretest": "npm run build",
     "style": "npm run style:main && npm run style:fp && npm run style:perf && npm run style:test",
@@ -44,6 +44,7 @@
     "jscs": "^3.0.6",
     "lodash": "4.13.1",
     "markdown-doctest": "^0.8.1",
+    "optional-dev-dependency": "^1.3.0",
     "platform": "^1.3.1",
     "qunit-extras": "^2.0.1",
     "qunitjs": "^2.0.0",
@@ -52,8 +53,5 @@
     "sauce-tunnel": "^2.5.0",
     "uglify-js": "2.7.0",
     "webpack": "^1.13.1"
-  },
-  "optionalDependencies": {
-    "marky-markdown": "^7.0.1"
   }
 }