diff --git a/CSharp/Libraries/UniversalEditor.Compression/UniversalEditor.Compression.csproj b/CSharp/Libraries/UniversalEditor.Compression/UniversalEditor.Compression.csproj
index 28bb75a6..36313eba 100644
--- a/CSharp/Libraries/UniversalEditor.Compression/UniversalEditor.Compression.csproj
+++ b/CSharp/Libraries/UniversalEditor.Compression/UniversalEditor.Compression.csproj
@@ -14,6 +14,8 @@
     <TargetFrameworkProfile />
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\..\..\..\MichaelBecker.snk</AssemblyOriginatorKeyFile>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj b/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj
index 0b30902d..a5452b95 100644
--- a/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj
+++ b/CSharp/Libraries/UniversalEditor.Core/UniversalEditor.Core.csproj
@@ -12,6 +12,8 @@
     <FileAlignment>512</FileAlignment>
     <TargetFrameworkProfile />
     <AssemblyOriginatorKeyFile>..\..\..\..\MichaelBecker.snk</AssemblyOriginatorKeyFile>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugType>full</DebugType>
diff --git a/CSharp/Libraries/UniversalEditor.Essential/UniversalEditor.Essential.csproj b/CSharp/Libraries/UniversalEditor.Essential/UniversalEditor.Essential.csproj
index 153684fd..1bcba80d 100644
--- a/CSharp/Libraries/UniversalEditor.Essential/UniversalEditor.Essential.csproj
+++ b/CSharp/Libraries/UniversalEditor.Essential/UniversalEditor.Essential.csproj
@@ -14,6 +14,8 @@
     <TargetFrameworkProfile />
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\..\..\..\MichaelBecker.snk</AssemblyOriginatorKeyFile>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
diff --git a/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/UniversalEditor.Plugins.Multimedia.csproj b/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/UniversalEditor.Plugins.Multimedia.csproj
index 2b71382a..d5baac79 100644
--- a/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/UniversalEditor.Plugins.Multimedia.csproj
+++ b/CSharp/Plugins/UniversalEditor.Plugins.Multimedia/UniversalEditor.Plugins.Multimedia.csproj
@@ -25,6 +25,8 @@
     <UseApplicationTrust>false</UseApplicationTrust>
     <BootstrapperEnabled>true</BootstrapperEnabled>
     <TargetFrameworkProfile />
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Platform)' == 'AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>