diff --git a/install.rdf b/install.rdf
index 5143a358..dd022460 100644
--- a/install.rdf
+++ b/install.rdf
@@ -5,7 +5,7 @@
     <em:type>2</em:type>
     <em:bootstrap>true</em:bootstrap>
     <em:name>Tab Center</em:name>
-    <em:version>1.19</em:version>
+    <em:version>1.20</em:version>
     <em:homepageURL>https://github.com/bwinton/VerticalTabs</em:homepageURL>
     <em:updateURL>https://people.mozilla.com/~bwinton/TabCenter/tab-center.update.rdf</em:updateURL>
     <em:iconURL>resource://tabcenter/skin/icon.png</em:iconURL>
diff --git a/package.json b/package.json
index 5254418e..e962b6ac 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "tab-center",
-  "version": "1.19.0",
+  "version": "1.20.0",
   "description": "Tab Center is an attempt to solve some of the issues that have emerged from the way people use tabs (most notably the “too many tabs” problem) and provide a more versatile UI basis for future innovation. The first version of this Firefox add-on arranges tabs in a vertical rather than horizontal fashion. It is heavily inspired by and borrows ideas from the excellent VerticalTabs add-on.",
   "main": "bootstrap.js",
   "directories": {
diff --git a/tab-center.update.rdf b/tab-center.update.rdf
index d3e7ad93..15b4ced8 100644
--- a/tab-center.update.rdf
+++ b/tab-center.update.rdf
@@ -5,7 +5,7 @@
       <Seq>
         <li>
           <Description>
-            <em:version>1.19</em:version>
+            <em:version>1.20</em:version>
             <em:targetApplication>
               <Description>
                 <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id> <!-- Firefox -->