diff --git a/mail/app/profile/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/install.rdf.in b/mail/app/profile/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/install.rdf.in
index 7afbd4a94d4b..fc9fc5012d48 100644
--- a/mail/app/profile/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/install.rdf.in
+++ b/mail/app/profile/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/install.rdf.in
@@ -12,8 +12,8 @@
     <em:targetApplication>
       <Description>
         <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
-        <em:minVersion>1.0</em:minVersion>
-        <em:maxVersion>1.1</em:maxVersion>
+        <em:minVersion>1.0+</em:minVersion>
+        <em:maxVersion>1.0+</em:maxVersion>
       </Description>
     </em:targetApplication>