diff --git a/thunderbird.xml b/thunderbird.xml
index a0bf933c4439381c18ba51f00c241f6f14fb3e60..98d0c11b2c60de35f47cd2042ff52963adfc9460 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="52.8.0" />
+ <variable name="version" value="52.9.0" />
  <variable name="prefsversion" value="52" />
  <check type="uninstall" condition="exists" path="Mozilla Thunderbird %version%.*" />