diff --git a/Core/Tests/Speckle.Core.Tests.Integration/Speckle.Core.Tests.Integration.csproj b/Core/Tests/Speckle.Core.Tests.Integration/Speckle.Core.Tests.Integration.csproj
index 2f33bde039..601ca5b78d 100644
--- a/Core/Tests/Speckle.Core.Tests.Integration/Speckle.Core.Tests.Integration.csproj
+++ b/Core/Tests/Speckle.Core.Tests.Integration/Speckle.Core.Tests.Integration.csproj
@@ -22,7 +22,7 @@
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     <PackageReference Include="NUnit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-    <PackageReference Include="System.Text.Json" Version="7.0.2" />
+    <PackageReference Include="System.Text.Json" Version="8.0.4" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/Core/Tests/Speckle.Core.Tests.Unit/Speckle.Core.Tests.Unit.csproj b/Core/Tests/Speckle.Core.Tests.Unit/Speckle.Core.Tests.Unit.csproj
index bafea84d89..5f8635ad32 100644
--- a/Core/Tests/Speckle.Core.Tests.Unit/Speckle.Core.Tests.Unit.csproj
+++ b/Core/Tests/Speckle.Core.Tests.Unit/Speckle.Core.Tests.Unit.csproj
@@ -21,7 +21,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.0" />
     <PackageReference Include="NUnit" Version="3.13.3" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-    <PackageReference Include="System.Text.Json" Version="7.0.2" />
+    <PackageReference Include="System.Text.Json" Version="8.0.4" />
   </ItemGroup>
   
   <ItemGroup>