diff --git a/v2.0/LetsEncrypt/LetsEncrypt.csproj b/v2.0/LetsEncrypt/LetsEncrypt.csproj
index 04c9d3f..b73bc2e 100644
--- a/v2.0/LetsEncrypt/LetsEncrypt.csproj
+++ b/v2.0/LetsEncrypt/LetsEncrypt.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
   <ItemGroup>