diff --git a/locales/generic/install.rdf b/locales/generic/install.rdf
--- a/locales/generic/install.rdf
+++ b/locales/generic/install.rdf
@@ -55,17 +55,17 @@
          2.0 is Gecko 1.9.1
          2.1 is Gecko 2.0
          2.2 is Gecko 5.0
          2.x is Gecko (x+3).0, where x is greater than 2 -->
     <em:targetApplication>
       <Description>
         <em:id>{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}</em:id>
         <em:minVersion>2.0</em:minVersion>
-        <em:maxVersion>2.16a1</em:maxVersion>
+        <em:maxVersion>2.20a1</em:maxVersion>
       </Description>
     </em:targetApplication>
 
     <!-- Songbird
          1.9 is Gecko 1.9.2
          1.10 is Gecko 1.9.2 -->
     <em:targetApplication>
       <Description>