diff --git a/package.json b/package.json
index 38714b3..8dfac97 100644
--- a/package.json
+++ b/package.json
@@ -24,16 +24,16 @@
   },
   "dependencies": {
     "ajv": "4.8.2",
-    "brace": "0.8.0",
+    "brace": "0.9.0",
     "javascript-natural-sort": "0.7.1",
     "lodash": "4.16.4",
-    "preact": "6.3.0"
+    "preact": "6.4.0"
   },
   "devDependencies": {
     "ava": "0.16.0",
-    "babel-core": "6.17.0",
-    "babel-loader": "6.2.5",
-    "babel-preset-stage-2": "6.17.0",
+    "babel-core": "6.18.0",
+    "babel-loader": "6.2.7",
+    "babel-preset-stage-2": "6.18.0",
     "babel-preset-stage-3": "6.17.0",
     "browser-sync": "2.17.5",
     "css-loader": "0.25.0",
@@ -47,7 +47,7 @@
     "mkdirp": "0.5.1",
     "style-loader": "0.13.1",
     "svg-url-loader": "1.1.0",
-    "webpack": "1.13.2"
+    "webpack": "1.13.3"
   },
   "ava": {
     "require": [
diff --git a/src/typedef.js b/src/typedef.js
index 0ed96f2..c9a6a8c 100644
--- a/src/typedef.js
+++ b/src/typedef.js
@@ -34,6 +34,7 @@
  *   name: string?,
  *   mode?: 'code' | 'form' | 'text' | 'tree' | 'view',
  *   modes?: string[],
+ *   history?: boolean,
  *   indentation?: number | string,
  *   onChange?: function (patch: JSONPatch, revert: JSONPatch),
  *   onChangeText?: function (),