diff --git a/thunderbird.xml b/thunderbird.xml
index 8f75ab16ba6622e65c7f5d73a45b405ef734b4f3..2d919c648a6b378d9adf7729cf0542cd733c6400 100755
--- a/thunderbird.xml
+++ b/thunderbird.xml
@@ -7,7 +7,7 @@
 			 we add in chemistry-prefs.js. Thus, we tie that to a version, and please test carefully when
        upgrading -->
 
- <variable name="version" value="31.2.0" />  
+ <variable name="version" value="31.3.0" />  
  <check type="uninstall" condition="exists" path="Mozilla Thunderbird %version%.*" />
 
   <install cmd='"%software%\thunderbird\Thunderbird Setup %version%.exe" -ms' />