diff --git a/JsonSubTypes.Tests.Net35/JsonSubTypes.Tests.Net35.csproj b/JsonSubTypes.Tests.Net35/JsonSubTypes.Tests.Net35.csproj
index 298fb01..f51a761 100644
--- a/JsonSubTypes.Tests.Net35/JsonSubTypes.Tests.Net35.csproj
+++ b/JsonSubTypes.Tests.Net35/JsonSubTypes.Tests.Net35.csproj
@@ -17,7 +17,7 @@
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="NUnit" Version="3.14.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
     <PackageReference Include="TaskParallelLibrary" Version="1.0.2856.0" />
   </ItemGroup>
   <ItemGroup>
diff --git a/JsonSubTypes.Tests/JsonSubTypes.Tests.csproj b/JsonSubTypes.Tests/JsonSubTypes.Tests.csproj
index 5fc4970..459d986 100644
--- a/JsonSubTypes.Tests/JsonSubTypes.Tests.csproj
+++ b/JsonSubTypes.Tests/JsonSubTypes.Tests.csproj
@@ -18,7 +18,7 @@
   <ItemGroup>
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="NUnit" Version="3.14.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
   </ItemGroup>
   <ItemGroup Condition="'$(TargetFramework)'=='net8.0' Or '$(TargetFramework)'=='net10.0'">
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
diff --git a/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj b/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj
index fc087d9..d8f15b7 100644
--- a/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj
+++ b/JsonSubTypes.Text.Json.Aot.Generator.Tests/JsonSubTypes.Text.Json.Aot.Generator.Tests.csproj
@@ -9,7 +9,7 @@
 
   <ItemGroup>
     <PackageReference Include="nunit" Version="3.14.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
     <PackageReference Include="coverlet.collector" Version="10.1.0">
       <PrivateAssets>all</PrivateAssets>
diff --git a/JsonSubTypes.Text.Json.Aot.Tests/JsonSubTypes.Text.Json.Aot.Tests.csproj b/JsonSubTypes.Text.Json.Aot.Tests/JsonSubTypes.Text.Json.Aot.Tests.csproj
index 5b45476..1e1ed6e 100644
--- a/JsonSubTypes.Text.Json.Aot.Tests/JsonSubTypes.Text.Json.Aot.Tests.csproj
+++ b/JsonSubTypes.Text.Json.Aot.Tests/JsonSubTypes.Text.Json.Aot.Tests.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="nunit" Version="3.14.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
     <PackageReference Include="coverlet.collector" Version="10.1.0">
       <PrivateAssets>all</PrivateAssets>
diff --git a/JsonSubTypes.Text.Json.Tests/JsonSubTypes.Text.Json.Tests.csproj b/JsonSubTypes.Text.Json.Tests/JsonSubTypes.Text.Json.Tests.csproj
index afb34b3..d59d425 100644
--- a/JsonSubTypes.Text.Json.Tests/JsonSubTypes.Text.Json.Tests.csproj
+++ b/JsonSubTypes.Text.Json.Tests/JsonSubTypes.Text.Json.Tests.csproj
@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="nunit" Version="3.14.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.3.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.10.1" />
     <PackageReference Include="coverlet.collector" Version="10.1.0">
       <PrivateAssets>all</PrivateAssets>