diff --git a/packages/thunderbird-config.xml b/packages/thunderbird-config.xml
index 4f1d77b..e08a144 100644
--- a/packages/thunderbird-config.xml
+++ b/packages/thunderbird-config.xml
@@ -8,7 +8,7 @@
 
         <depends package-id="thunderbird" />
 
-        <variable name='PKG_VERSION' value='8' />
+        <variable name='PKG_VERSION' value='9' />
         <variable architecture='x86' name='PROG' value='%PROGRAMFILES%\Mozilla Thunderbird' />
         <variable architecture='x64' name='PROG' value='%PROGRAMFILES(x86)%\Mozilla Thunderbird' />
         <variable architecture='x86' name='REG_PATH' value='HKLM\Software\Mozilla\Thunderbird' />