diff --git a/thunderbird.xml b/thunderbird.xml
index bcf367ed7b14f33da226e1281fc9b21921fe47b4..7cda4a7dadfb0ce59717b97c2392ec60246c063d 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="52.1.1" />
+ <variable name="version" value="52.2.0" />
  <variable name="prefsversion" value="52" />
  <check type="uninstall" condition="exists" path="Mozilla Thunderbird %version%.*" />