diff --git a/src/Package.props b/src/Package.props
new file mode 100644
index 0000000..0567ced
--- /dev/null
+++ b/src/Package.props
@@ -0,0 +1,5 @@
+<Project>
+    <PropertyGroup>
+        <AvaloniaVersion>11.0.0</AvaloniaVersion>
+    </PropertyGroup>
+</Project>
\ No newline at end of file
diff --git a/src/Ursa.Themes.Semi/Ursa.Themes.Semi.csproj b/src/Ursa.Themes.Semi/Ursa.Themes.Semi.csproj
index 5328c9d..5bb0d73 100644
--- a/src/Ursa.Themes.Semi/Ursa.Themes.Semi.csproj
+++ b/src/Ursa.Themes.Semi/Ursa.Themes.Semi.csproj
@@ -1,5 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+    <Import Project="../Package.props"/>
+
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
@@ -11,11 +13,11 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Avalonia" Version="11.0.0" />
+        <PackageReference Include="Avalonia" Version="$(AvaloniaVersion)"/>
     </ItemGroup>
 
     <ItemGroup>
-      <ProjectReference Include="..\Ursa\Ursa.csproj" />
+        <ProjectReference Include="..\Ursa\Ursa.csproj"/>
     </ItemGroup>
-    
+
 </Project>
diff --git a/src/Ursa/Ursa.csproj b/src/Ursa/Ursa.csproj
index ecd9541..01a32db 100644
--- a/src/Ursa/Ursa.csproj
+++ b/src/Ursa/Ursa.csproj
@@ -1,5 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
+    <Import Project="../Package.props"/>
+
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
@@ -11,11 +13,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Avalonia" Version="11.0.0" />
-    </ItemGroup>
-
-    <ItemGroup>
-      <Folder Include="TypeConverters" />
+        <PackageReference Include="Avalonia" Version="$(AvaloniaVersion)"/>
     </ItemGroup>
 
 </Project>