diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bff3f9b7..797b8cee 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -11,6 +11,7 @@ on:
   pull_request:
     branches:
       - master
+      - releases/*
     paths-ignore:
       - "*.md"
 
diff --git a/C5.Tests/C5.Tests.csproj b/C5.Tests/C5.Tests.csproj
index 2ac550da..ed656284 100644
--- a/C5.Tests/C5.Tests.csproj
+++ b/C5.Tests/C5.Tests.csproj
@@ -12,7 +12,7 @@
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
-    <PackageReference Include="NUnit" Version="3.14.0" />
+    <PackageReference Include="NUnit" Version="4.1.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.2.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>