diff --git a/Whale.Tests/Whale.Tests.csproj b/Whale.Tests/Whale.Tests.csproj
index 7fe8adf..e70abab 100644
--- a/Whale.Tests/Whale.Tests.csproj
+++ b/Whale.Tests/Whale.Tests.csproj
@@ -12,7 +12,7 @@
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-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.0.1" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
     <PackageReference Include="NUnit.Analyzers" Version="3.10.0">
       <PrivateAssets>all</PrivateAssets>