diff --git a/HomographySharpTest/HomographySharpTest.csproj b/HomographySharpTest/HomographySharpTest.csproj
index 48ca217..7928927 100644
--- a/HomographySharpTest/HomographySharpTest.csproj
+++ b/HomographySharpTest/HomographySharpTest.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="nunit" Version="3.13.3" />
+    <PackageReference Include="nunit" Version="4.0.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.7.2" />
   </ItemGroup>