diff --git a/HISTORY.md b/HISTORY.md
index 10a8d4e5..85e9d773 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,7 @@
 # vis.js history
 http://visjs.org
 
+## not yet released, version 4.4.1-SNAPSHOT
 
 ## 2015-07-03, version 4.4.0
 
diff --git a/bower.json b/bower.json
index 07d4f2f6..bc32645c 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "vis",
-  "version": "4.4.0",
+  "version": "4.4.1-SNAPSHOT",
   "main": ["dist/vis.min.js", "dist/vis.min.css"],
   "description": "A dynamic, browser-based visualization library.",
   "homepage": "http://visjs.org/",
diff --git a/package.json b/package.json
index 460c413e..49203e91 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vis",
-  "version": "4.4.0",
+  "version": "4.4.1-SNAPSHOT",
   "description": "A dynamic, browser-based visualization library.",
   "homepage": "http://visjs.org/",
   "license": "(Apache-2.0 OR MIT)",