diff --git a/InterfaceStubGenerator.Roslyn40/InterfaceStubGenerator.Roslyn40.csproj b/InterfaceStubGenerator.Roslyn41/InterfaceStubGenerator.Roslyn41.csproj
similarity index 100%
rename from InterfaceStubGenerator.Roslyn40/InterfaceStubGenerator.Roslyn40.csproj
rename to InterfaceStubGenerator.Roslyn41/InterfaceStubGenerator.Roslyn41.csproj
diff --git a/Refit.Benchmarks/Refit.Benchmarks.csproj b/Refit.Benchmarks/Refit.Benchmarks.csproj
index bbe5dfc0c..7ad4766cf 100644
--- a/Refit.Benchmarks/Refit.Benchmarks.csproj
+++ b/Refit.Benchmarks/Refit.Benchmarks.csproj
@@ -14,7 +14,7 @@
       <ProjectReference Include="..\Refit\Refit.csproj" />
       <ProjectReference Include="..\Refit.Xml\Refit.Xml.csproj" />
       <ProjectReference Include="..\InterfaceStubGenerator.Roslyn38\InterfaceStubGenerator.Roslyn38.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="true" />
-      <ProjectReference Include="..\InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj" />
+      <ProjectReference Include="..\InterfaceStubGenerator.Roslyn41\InterfaceStubGenerator.Roslyn41.csproj" />
     </ItemGroup>
 
     <ItemGroup>
diff --git a/Refit.GeneratorTests/Refit.GeneratorTests.csproj b/Refit.GeneratorTests/Refit.GeneratorTests.csproj
index a1b0d1dd3..ab1d11eb3 100644
--- a/Refit.GeneratorTests/Refit.GeneratorTests.csproj
+++ b/Refit.GeneratorTests/Refit.GeneratorTests.csproj
@@ -28,7 +28,7 @@
         <ProjectReference Include="..\Refit.Newtonsoft.Json\Refit.Newtonsoft.Json.csproj" />
         <ProjectReference Include="..\Refit.Xml\Refit.Xml.csproj" />
         <ProjectReference Include="..\InterfaceStubGenerator.Roslyn38\InterfaceStubGenerator.Roslyn38.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="true" />
-        <ProjectReference Include="..\InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj" />
+        <ProjectReference Include="..\InterfaceStubGenerator.Roslyn41\InterfaceStubGenerator.Roslyn41.csproj" />
         <ProjectReference Include="..\Refit\Refit.csproj" />
     </ItemGroup>
 
diff --git a/Refit.Tests/Refit.Tests.csproj b/Refit.Tests/Refit.Tests.csproj
index 0e33aaa64..124883313 100644
--- a/Refit.Tests/Refit.Tests.csproj
+++ b/Refit.Tests/Refit.Tests.csproj
@@ -32,7 +32,7 @@
     <ProjectReference Include="..\Refit.Newtonsoft.Json\Refit.Newtonsoft.Json.csproj" />
     <ProjectReference Include="..\Refit.Xml\Refit.Xml.csproj" />
     <ProjectReference Include="..\InterfaceStubGenerator.Roslyn38\InterfaceStubGenerator.Roslyn38.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="true" />
-    <ProjectReference Include="..\InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj" />
+    <ProjectReference Include="..\InterfaceStubGenerator.Roslyn41\InterfaceStubGenerator.Roslyn41.csproj" />
   </ItemGroup>
 
   <Import Project="..\Refit\targets\refit.targets" />
diff --git a/Refit.sln b/Refit.sln
index fdeb099bb..0477b3678 100644
--- a/Refit.sln
+++ b/Refit.sln
@@ -28,7 +28,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InterfaceStubGenerator.Rosl
 EndProject
 Project("{D954291E-2A0B-460D-934E-DC6B0785DB48}") = "InterfaceStubGenerator.Shared", "InterfaceStubGenerator.Shared\InterfaceStubGenerator.Shared.shproj", "{B591423D-F92D-4E00-B0EB-615C9853506C}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InterfaceStubGenerator.Roslyn40", "InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj", "{A4B61169-3314-41DB-8156-BE9677C90C9F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "InterfaceStubGenerator.Roslyn41", "InterfaceStubGenerator.Roslyn41\InterfaceStubGenerator.Roslyn41.csproj", "{A4B61169-3314-41DB-8156-BE9677C90C9F}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Refit.Xml", "Refit.Xml\Refit.Xml.csproj", "{C4E38B33-3D17-47A7-A47F-8F3900F07499}"
 EndProject
diff --git a/Refit/Refit.csproj b/Refit/Refit.csproj
index 5b7c7421c..9303d955f 100644
--- a/Refit/Refit.csproj
+++ b/Refit/Refit.csproj
@@ -17,7 +17,7 @@
     <Reference Include="System.Web" />
     <PackageReference Include="System.Net.Http" Version="4.3.4" />
     <ProjectReference Include="..\InterfaceStubGenerator.Roslyn38\InterfaceStubGenerator.Roslyn38.csproj" ReferenceOutputAssembly="false" />
-    <ProjectReference Include="..\InterfaceStubGenerator.Roslyn40\InterfaceStubGenerator.Roslyn40.csproj" ReferenceOutputAssembly="false" />
+    <ProjectReference Include="..\InterfaceStubGenerator.Roslyn41\InterfaceStubGenerator.Roslyn41.csproj" ReferenceOutputAssembly="false" />
   </ItemGroup>
 
   <ItemGroup Label="Package">
@@ -29,7 +29,7 @@
 
     <None Include="..\InterfaceStubGenerator.Roslyn38\bin\$(Configuration)\netstandard2.0\InterfaceStubGeneratorV1.dll" PackagePath="analyzers\dotnet\roslyn3.8\cs" Pack="true" Visible="false" />
 
-    <None Include="..\InterfaceStubGenerator.Roslyn40\bin\$(Configuration)\netstandard2.0\InterfaceStubGeneratorV2.dll" PackagePath="analyzers\dotnet\roslyn4.0\cs" Pack="true" Visible="false" />
+    <None Include="..\InterfaceStubGenerator.Roslyn41\bin\$(Configuration)\netstandard2.0\InterfaceStubGeneratorV2.dll" PackagePath="analyzers\dotnet\roslyn4.1\cs" Pack="true" Visible="false" />
   </ItemGroup>
 
 </Project>