diff --git a/test/WireMock.Net.Tests/WireMock.Net.Tests.csproj b/test/WireMock.Net.Tests/WireMock.Net.Tests.csproj
index 2e0bbe70..2e3a0bbe 100644
--- a/test/WireMock.Net.Tests/WireMock.Net.Tests.csproj
+++ b/test/WireMock.Net.Tests/WireMock.Net.Tests.csproj
@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <Authors>Stef Heyenrath</Authors>
-    <TargetFramework>net452;netcoreapp3.1</TargetFramework>
+    <TargetFrameworks>net452;netcoreapp3.1</TargetFrameworks>
     <DebugType>full</DebugType>
     <AssemblyName>WireMock.Net.Tests</AssemblyName>
     <PackageId>WireMock.Net.Tests</PackageId>