diff --git a/install.rdf b/install.rdf
index 19ea2674c..68fe197a8 100644
--- a/install.rdf
+++ b/install.rdf
@@ -6,7 +6,7 @@
   
     <em:id>zotero@chnm.gmu.edu</em:id>
     <em:name>Zotero</em:name>
-    <em:version>1.0.0rc3.SVN</em:version>
+    <em:version>1.0.0rc4.SVN</em:version>
     <em:description>The Next-Generation Research Tool</em:description>
     <em:creator>Center for History and New Media<br/>George Mason University</em:creator>
     <em:contributor>Dan Cohen</em:contributor>
diff --git a/update.rdf b/update.rdf
index 89ac24a0f..38267d51b 100644
--- a/update.rdf
+++ b/update.rdf
@@ -7,7 +7,7 @@
     <RDF:Seq>
       <RDF:li>
         <RDF:Description>
-          <version>1.0.0rc3.SVN</version>
+          <version>1.0.0rc4.SVN</version>
           <targetApplication>
             <RDF:Description>
               <id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</id>