diff --git a/csharpcore/csharpcore.csproj b/csharpcore/csharpcore.csproj
index 65b3f93f..dcffec2c 100644
--- a/csharpcore/csharpcore.csproj
+++ b/csharpcore/csharpcore.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp2.1</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <StartupObject>csharpcore.Program</StartupObject>
   </PropertyGroup>