diff --git a/ChangeLog.markdown b/ChangeLog.markdown
index c7185d113..abee92e07 100644
--- a/ChangeLog.markdown
+++ b/ChangeLog.markdown
@@ -1,5 +1,10 @@
 # Mouse Wheel ChangeLog
 
+# 3.1.1
+
+* Fix rounding issue with deltas less than zero
+
+
 # 3.1.0
 
 * Fix Firefox 17+ issues by using new wheel event
diff --git a/jquery.mousewheel.js b/jquery.mousewheel.js
index 4f402485b..7c398d76b 100755
--- a/jquery.mousewheel.js
+++ b/jquery.mousewheel.js
@@ -5,7 +5,7 @@
  * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
  * Thanks to: Seamus Leahy for adding deltaX and deltaY
  *
- * Version: 3.1.0
+ * Version: 3.1.1
  *
  * Requires: 1.2.2+
  */
diff --git a/mousewheel.jquery.json b/mousewheel.jquery.json
index 4b52f1d7b..f8ea8f99c 100644
--- a/mousewheel.jquery.json
+++ b/mousewheel.jquery.json
@@ -7,7 +7,7 @@
         "mouse",
         "event"
     ],
-    "version": "3.1.0",
+    "version": "3.1.1",
     "author": {
         "name": "Brandon Aaron",
         "url": "http://brandonaaron.net"