diff --git a/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests.csproj b/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests.csproj
index da67ce2..3bca904 100644
--- a/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests.csproj
+++ b/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests/TomLonghurst.ReadableTimeSpan.Newtonsoft.Json.UnitTests.csproj
@@ -10,7 +10,7 @@
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
         <PackageReference Include="NUnit" Version="5.0.0" />
-        <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+        <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
         <PackageReference Include="coverlet.collector" Version="10.1.0" />
     </ItemGroup>
 
diff --git a/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests.csproj b/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests.csproj
index bc176bf..cd4f73c 100644
--- a/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests.csproj
+++ b/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests/TomLonghurst.ReadableTimeSpan.System.Text.Json.UnitTests.csproj
@@ -10,7 +10,7 @@
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
         <PackageReference Include="NUnit" Version="5.0.0" />
-        <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+        <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
         <PackageReference Include="coverlet.collector" Version="10.1.0" />
     </ItemGroup>
 
diff --git a/TomLonghurst.ReadableTimeSpan.UnitTests/TomLonghurst.ReadableTimeSpan.UnitTests.csproj b/TomLonghurst.ReadableTimeSpan.UnitTests/TomLonghurst.ReadableTimeSpan.UnitTests.csproj
index b52116b..bad3e05 100644
--- a/TomLonghurst.ReadableTimeSpan.UnitTests/TomLonghurst.ReadableTimeSpan.UnitTests.csproj
+++ b/TomLonghurst.ReadableTimeSpan.UnitTests/TomLonghurst.ReadableTimeSpan.UnitTests.csproj
@@ -13,7 +13,7 @@
         <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="10.0.12" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
         <PackageReference Include="NUnit" Version="5.0.0" />
-        <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+        <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
         <PackageReference Include="coverlet.collector" Version="10.1.0" />
     </ItemGroup>