diff --git a/src/SolutionInfo.cs b/src/SolutionInfo.cs
index 1c59137aac..89997c0a01 100644
--- a/src/SolutionInfo.cs
+++ b/src/SolutionInfo.cs
@@ -18,5 +18,5 @@ using System.Resources;
 [assembly: AssemblyVersion("8.0.0")]
 
 // these are FYI and changed automatically
-[assembly: AssemblyFileVersion("8.9.1")]
-[assembly: AssemblyInformationalVersion("8.9.1")]
+[assembly: AssemblyFileVersion("8.10.0")]
+[assembly: AssemblyInformationalVersion("8.10.0-rc")]
diff --git a/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj b/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
index aece40a4c4..6e4a4b780e 100644
--- a/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
+++ b/src/Umbraco.Web.UI/Umbraco.Web.UI.csproj
@@ -347,9 +347,9 @@
         <WebProjectProperties>
           <UseIIS>False</UseIIS>
           <AutoAssignPort>True</AutoAssignPort>
-          <DevelopmentServerPort>8910</DevelopmentServerPort>
+          <DevelopmentServerPort>8100</DevelopmentServerPort>
           <DevelopmentServerVPath>/</DevelopmentServerVPath>
-          <IISUrl>http://localhost:8910</IISUrl>
+          <IISUrl>http://localhost:8100</IISUrl>
           <NTLMAuthentication>False</NTLMAuthentication>
           <UseCustomServer>False</UseCustomServer>
           <CustomServerUrl>