diff --git a/README.md b/README.md
index e0e0ed06..bba87180 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Please follow instructions at https://github.com/Microsoft/pxt#running-a-target-
 ## Universal Windows App
 
 The Windows 10 app is a [Universal Windows Hosted Web App](https://microsoftedge.github.io/WebAppsDocs/en-US/win10/CreateHWA.htm)
-that wraps codemicrobit.com and provides additional features.
+that wraps m.pxt.io and provides additional features.
 
 ### Sideloading
 
diff --git a/pxtarget.json b/pxtarget.json
index 82233b9d..c71e9962 100644
--- a/pxtarget.json
+++ b/pxtarget.json
@@ -72,13 +72,13 @@
         "log": true
     },
     "appTheme": {
-        "logoUrl": "https://codemicrobit.com/about",
+        "logoUrl": "https://m.pxt.io/about",
         "logo": "./static/logo.svg",
         "docsLogo": "./static/docslogo.svg",
         "portraitLogo":"./static/portraitlogo.svg",
         "footerLogo": "./static/footerlogo.svg",
-        "homeUrl": "https://codemicrobit.com/",
-        "embedUrl": "https://codemicrobit.com/",
+        "homeUrl": "https://m.pxt.io/",
+        "embedUrl": "https://m.pxt.io/",
         "koduUrl": "https://www.kodugamelab.com/bbc-microbit/",
         "visualStudioCode": true,
         "docMenu": [
diff --git a/win10/app/package.appxmanifest b/win10/app/package.appxmanifest
index 128dd462..09efe5b2 100644
--- a/win10/app/package.appxmanifest
+++ b/win10/app/package.appxmanifest
@@ -14,9 +14,9 @@
     <Resource Language="x-generate" />
   </Resources>
   <Applications>
-    <Application Id="App" StartPage="https://codemicrobit.com/">
+    <Application Id="App" StartPage="https://m.pxt.io/">
       <uap:ApplicationContentUriRules>
-        <uap:Rule Match="https://codemicrobit.com/" Type="include" WindowsRuntimeAccess="all" />
+        <uap:Rule Match="https://m.pxt.io/" Type="include" WindowsRuntimeAccess="all" />
       </uap:ApplicationContentUriRules>
       <uap:VisualElements DisplayName="code micro:bit" Description="Code editors for the BBC micro:bits" BackgroundColor="white" Square150x150Logo="images\Square150x150Logo.png" Square44x44Logo="images\Square44x44Logo.png">
         <uap:DefaultTile Wide310x150Logo="images\Wide310x150Logo.png">
@@ -27,7 +27,7 @@
         <uap:Extension Category="windows.fileTypeAssociation">
           <uap:FileTypeAssociation Name="microbithex">
             <uap:DisplayName>BBC micro:bit binary file</uap:DisplayName>
-            <uap:InfoTip>.hex file created with codemicrobit.com or microbit.co.uk</uap:InfoTip>
+            <uap:InfoTip>.hex file created with m.pxt.io or microbit.co.uk</uap:InfoTip>
             <uap:SupportedFileTypes>
               <uap:FileType ContentType="application/x-microbit-hex">.hex</uap:FileType>
             </uap:SupportedFileTypes>