diff --git a/lib/document.js b/lib/document.js
index d371a8d..027c550 100644
--- a/lib/document.js
+++ b/lib/document.js
@@ -508,7 +508,8 @@
         type: this.constructor.getDocumentType(),
         refresh: refresh,
         id: this.id,
-        version: this.version,
+        version: this.version + 1,
+        versionType: 'external',
         body: document
       }, (function(_this) {
         return function(error, response) {
diff --git a/package.json b/package.json
index e50709a..1f5bde3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "enju",
-  "version": "0.1.8",
+  "version": "0.1.9",
   "description": "An elasticsearch on node.js written in CoffeeScript.",
   "main": "index.js",
   "scripts": {