diff --git a/HISTORY.md b/HISTORY.md
index 5e2083b0..170a5bfb 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -2,6 +2,9 @@
 http://visjs.org
 
 
+## not-yet-released, version 4.3.1-SNAPSHOT
+
+
 ## 2015-06-16, version 4.3.0
 
 ### General
diff --git a/bower.json b/bower.json
index e9550317..47aa7ee4 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "vis",
-  "version": "4.3.0",
+  "version": "4.3.1-SNAPSHOT",
   "main": ["dist/vis.min.js", "dist/vis.min.css"],
   "description": "A dynamic, browser-based visualization library.",
   "homepage": "http://visjs.org/",
diff --git a/dist/vis.js b/dist/vis.js
index 1e901290..6b78db97 100644
--- a/dist/vis.js
+++ b/dist/vis.js
@@ -4,7 +4,7 @@
  *
  * A dynamic, browser-based visualization library.
  *
- * @version 4.3.0
+ * @version 4.3.1-SNAPSHOT
  * @date    2015-06-16
  *
  * @license
diff --git a/dist/vis.min.js b/dist/vis.min.js
index 1b377157..b1473dfc 100644
--- a/dist/vis.min.js
+++ b/dist/vis.min.js
@@ -4,7 +4,7 @@
  *
  * A dynamic, browser-based visualization library.
  *
- * @version 4.3.0
+ * @version 4.3.1-SNAPSHOT
  * @date    2015-06-16
  *
  * @license
diff --git a/package.json b/package.json
index e66a04ee..b91e1ab7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vis",
-  "version": "4.3.0",
+  "version": "4.3.1-SNAPSHOT",
   "description": "A dynamic, browser-based visualization library.",
   "homepage": "http://visjs.org/",
   "license": "(Apache-2.0 OR MIT)",