diff --git a/ProductCodeValidator.Test/ProductCodeValidator.Test.csproj b/ProductCodeValidator.Test/ProductCodeValidator.Test.csproj
index d61e262..8d58a67 100644
--- a/ProductCodeValidator.Test/ProductCodeValidator.Test.csproj
+++ b/ProductCodeValidator.Test/ProductCodeValidator.Test.csproj
@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp1.1</TargetFramework>
+    <TargetFramework>net5.0</TargetFramework>
 
     <IsPackable>false</IsPackable>
   </PropertyGroup>
diff --git a/ProductCodeValidator/ProductCodeValidator.csproj b/ProductCodeValidator/ProductCodeValidator.csproj
index ba0c406..a429619 100644
--- a/ProductCodeValidator/ProductCodeValidator.csproj
+++ b/ProductCodeValidator/ProductCodeValidator.csproj
@@ -1,9 +1,9 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netstandard1.0</TargetFramework>
+    <TargetFramework>netstandard2.1</TargetFramework>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
-    <Version>1.1.0</Version>
+    <Version>2.0.0</Version>
     <Authors>Thomas Pentenrieder</Authors>
     <Company>medienstudio.net</Company>
     <Description>The "Product Code Validator" project aims to facilitate the validation of product identifiers such as EAN, ISBN or ASIN by checking, if a tested value matches the required format.
diff --git a/README.md b/README.md
index 047c6a4..2cf05b3 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 Product Code Validator
 ================
 
+**Current Verion:** 2.0.0
+
 The "Product Code Validator" project aims to facilitate the validation of product identifiers such as EAN, ISBN or ASIN by checking, if a tested value matches the required format.
 
 Attention: This code will not check, if a product really exists. It just validates a code that could be a product!
@@ -13,4 +15,8 @@ Currently supported:
  - EAN
  - ASIN
  - ISBN
- - UPC
\ No newline at end of file
+ - UPC
+ 
+# Change Log 
+## Version 2.0.0
+Project upgraded to .NET 5.0