diff --git a/platform/firefox/install.rdf b/platform/firefox/install.rdf
index 8ead14129..ce2324150 100644
--- a/platform/firefox/install.rdf
+++ b/platform/firefox/install.rdf
@@ -21,7 +21,7 @@
             <Description>
                 <em:id>{{ec8030f7-c20a-464f-9b0e-13a3a9e97384}}</em:id>
                 <em:minVersion>24.0</em:minVersion>
-                <em:maxVersion>*</em:maxVersion>
+                <em:maxVersion>56.*</em:maxVersion>
             </Description>
         </em:targetApplication>