diff --git a/Directory.Build.props b/Directory.Build.props
new file mode 100644
index 00000000..fd7d79a2
--- /dev/null
+++ b/Directory.Build.props
@@ -0,0 +1,5 @@
+<Project>
+  <PropertyGroup>
+    <LangVersion>13</LangVersion>
+  </PropertyGroup>
+</Project>
diff --git a/Dock.sln b/Dock.sln
index 49ae0967..c0197150 100644
--- a/Dock.sln
+++ b/Dock.sln
@@ -12,6 +12,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "build", "build", "{C4E2763D
 		global.json = global.json
 		build\dock.public.snk = build\dock.public.snk
 		azure-pipelines.yml = azure-pipelines.yml
+		Directory.Build.props = Directory.Build.props
 	EndProjectSection
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "docs", "docs", "{D16F65F7-7F44-40DB-B82A-1344A05D121D}"
diff --git a/NuGet.Config b/NuGet.Config
index 120f7e4c..99d827d4 100644
--- a/NuGet.Config
+++ b/NuGet.Config
@@ -4,7 +4,5 @@
   <packageSources>
     <clear />
     <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" />
-    <add key="AvaloniaCI" value="https://pkgs.dev.azure.com/AvaloniaUI/AvaloniaUI/_packaging/avalonia-all/nuget/v3/index.json" protocolVersion="3" />
-    <add key="skiasharp" value="https://aka.ms/skiasharp-eap/index.json" protocolVersion="3" />
   </packageSources>
 </configuration>
diff --git a/build/Base.props b/build/Base.props
index a56d49c0..c6b57352 100644
--- a/build/Base.props
+++ b/build/Base.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <VersionPrefix>11.2.0</VersionPrefix>
+    <VersionPrefix>11.2.0.1</VersionPrefix>
     <VersionSuffix></VersionSuffix>
     <Authors>Wiesław Šoltés</Authors>
     <Company>Wiesław Šoltés</Company>
diff --git a/global.json b/global.json
index 78656299..6f4a5233 100644
--- a/global.json
+++ b/global.json
@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.100",
+    "version": "9.0.100",
     "rollForward": "latestMinor",
     "allowPrerelease": true
   }