diff --git a/src/install.rdf b/src/install.rdf
index 600c0d9..72c9109 100644
--- a/src/install.rdf
+++ b/src/install.rdf
@@ -9,24 +9,37 @@
 
   <Description about="urn:mozilla:install-manifest">
     <em:id>{cbb923ca-2954-426b-b98e-98e62085837f}</em:id>
-    <em:version>2.6.0</em:version>
+    <em:version>2.7.0</em:version>
     <em:name>Maxi3</em:name>
     <em:description>Maxthon like theme for Pale Moon.</em:description>
     <em:creator>Lootyhoof</em:creator>
     <em:type>4</em:type>
     <em:internalName>maxi3</em:internalName>
     <em:skinnable>true</em:skinnable>
+    <em:updateURL>https://raw.githubusercontent.com/Lootyhoof/maxi3/master/update.xml</em:updateURL>
 
     <em:contributor>dkgo</em:contributor>
     <em:contributor>Maxthon</em:contributor>
     <em:contributor>Graciliano (Win10 caption buttons)</em:contributor>
 
     <em:targetApplication>
+      <!-- Pale Moon -->
       <Description>
-        <!-- Pale Moon -->
         <em:id>{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}</em:id>
         <em:minVersion>28.6.0</em:minVersion>
-        <em:maxVersion>29.*</em:maxVersion>
+        <em:maxVersion>30.*</em:maxVersion>
+      </Description>
+    </em:targetApplication>
+    <em:targetApplication>
+      <!-- Applications using Firefox GUID -->
+      <Description>
+        <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
+        <!--
+            Pale Moon 30 and above will stop using its own GUID to
+            "further improve extension compatibility"
+          -->
+        <em:minVersion>30.0.0a1</em:minVersion>
+        <em:maxVersion>30.*</em:maxVersion>
       </Description>
     </em:targetApplication>
   </Description>
diff --git a/update.xml b/update.xml
new file mode 100644
index 0000000..a3e6464
--- /dev/null
+++ b/update.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:em="http://www.mozilla.org/2004/em-rdf#">
+  <RDF:Description about="urn:mozilla:extension:{cbb923ca-2954-426b-b98e-98e62085837f}">
+    <em:updates>
+      <RDF:Seq>
+        <RDF:li>
+          <RDF:Description>
+            <em:version>2.7.0</em:version>
+            <em:targetApplication>
+              <RDF:Description>
+                <em:id>{8de7fcbb-c55c-4fbe-bfc5-fc555c87dbc4}</em:id>
+                <em:minVersion>28.6.0</em:minVersion>
+                <em:maxVersion>30.*</em:maxVersion>
+                <em:updateLink>https://github.com/Lootyhoof/maxi3/releases/download/v2.7.0/maxi3-2.7.0-pm.xpi</em:updateLink>
+              </RDF:Description>
+            </em:targetApplication>
+            <em:targetApplication>
+              <RDF:Description>
+                <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}</em:id>
+                <em:minVersion>30.0.0a1</em:minVersion>
+                <em:maxVersion>30.*</em:maxVersion>
+                <em:updateLink>https://github.com/Lootyhoof/maxi3/releases/download/v2.7.0/maxi3-2.7.0-pm.xpi</em:updateLink>
+              </RDF:Description>
+            </em:targetApplication>
+          </RDF:Description>
+        </RDF:li>
+      </RDF:Seq>
+    </em:updates>
+  </RDF:Description>
+</RDF:RDF>
\ No newline at end of file