diff --git a/install.rdf b/install.rdf
index fc6d9f3c7..7b6798e22 100644
--- a/install.rdf
+++ b/install.rdf
@@ -25,7 +25,7 @@
       <Description>
         <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
         <em:minVersion>17.0</em:minVersion>
-        <em:maxVersion>27.*</em:maxVersion>
+        <em:maxVersion>28.*</em:maxVersion>
       </Description>
     </em:targetApplication>
     
diff --git a/update.rdf b/update.rdf
index 6b258d11c..0c4ca70b0 100644
--- a/update.rdf
+++ b/update.rdf
@@ -12,7 +12,7 @@
             <RDF:Description>
               <id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</id>
               <minVersion>17.0</minVersion>
-              <maxVersion>27.*</maxVersion>
+              <maxVersion>28.*</maxVersion>
               <updateLink>http://download.zotero.org/extension/zotero.xpi</updateLink>
               <updateHash>sha1:</updateHash>
             </RDF:Description>