update news for release

diff --git a/docs/news.txt b/docs/news.txt
index 1a3471c..9430ec4 100644
--- a/docs/news.txt
+++ b/docs/news.txt

@@ -1,11 +1,13 @@
 Changes & News
 --------------
 
-hg tip
-------
+1.5.1
+-----
 
 * Added ``_weakrefset`` requirement for Python 2.7.1.
 
+* Fixed Windows regression in 1.5
+
 1.5
 ---
 

diff --git a/virtualenv.py b/virtualenv.py
index ce9a985..777433b 100755
--- a/virtualenv.py
+++ b/virtualenv.py

@@ -2,7 +2,7 @@
 """Create a "virtual" Python installation
 """
 
-virtualenv_version = "1.5"
+virtualenv_version = "1.5.1"
 
 import sys
 import os