diff --git a/tests/Spectra.CLI.Tests/Spectra.CLI.Tests.csproj b/tests/Spectra.CLI.Tests/Spectra.CLI.Tests.csproj
index d64f3022..f8bc81ae 100644
--- a/tests/Spectra.CLI.Tests/Spectra.CLI.Tests.csproj
+++ b/tests/Spectra.CLI.Tests/Spectra.CLI.Tests.csproj
@@ -11,7 +11,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="8.0.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
diff --git a/tests/Spectra.Core.Tests/Spectra.Core.Tests.csproj b/tests/Spectra.Core.Tests/Spectra.Core.Tests.csproj
index 3b027c95..82d75ecc 100644
--- a/tests/Spectra.Core.Tests/Spectra.Core.Tests.csproj
+++ b/tests/Spectra.Core.Tests/Spectra.Core.Tests.csproj
@@ -12,7 +12,7 @@
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="8.0.1" />
     <PackageReference Include="Microsoft.Data.Sqlite" Version="10.0.5" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>
diff --git a/tests/Spectra.MCP.Tests/Spectra.MCP.Tests.csproj b/tests/Spectra.MCP.Tests/Spectra.MCP.Tests.csproj
index 63954209..e68d035c 100644
--- a/tests/Spectra.MCP.Tests/Spectra.MCP.Tests.csproj
+++ b/tests/Spectra.MCP.Tests/Spectra.MCP.Tests.csproj
@@ -10,7 +10,7 @@
 
   <ItemGroup>
     <PackageReference Include="coverlet.collector" Version="8.0.1" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.5.1" />
     <PackageReference Include="xunit" Version="2.9.3" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.5" />
   </ItemGroup>