diff --git a/src/AzureIoTHub.Portal.Server.Tests.Unit/AzureIoTHub.Portal.Server.Tests.Unit.csproj b/src/AzureIoTHub.Portal.Server.Tests.Unit/AzureIoTHub.Portal.Server.Tests.Unit.csproj
index 08933c6e0..6024c4e7c 100644
--- a/src/AzureIoTHub.Portal.Server.Tests.Unit/AzureIoTHub.Portal.Server.Tests.Unit.csproj
+++ b/src/AzureIoTHub.Portal.Server.Tests.Unit/AzureIoTHub.Portal.Server.Tests.Unit.csproj
@@ -8,7 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="bunit" Version="1.5.12" />
-    <PackageReference Include="bunit.core" Version="1.5.12" />
+    <PackageReference Include="bunit.core" Version="1.6.4" />
     <PackageReference Include="bunit.web" Version="1.5.12" />
     <PackageReference Include="bunit.web.testcomponents" Version="1.5.12" />
     <PackageReference Include="FluentAssertions" Version="6.5.1" />