diff --git a/TUnit.Core/TUnit.Core.targets b/TUnit.Core/TUnit.Core.targets
index 469e3e293f..7fa1951ea1 100644
--- a/TUnit.Core/TUnit.Core.targets
+++ b/TUnit.Core/TUnit.Core.targets
@@ -8,7 +8,7 @@
 
     <!-- Auto-include Polyfill package for compile-time type generation -->
     <PropertyGroup>
-        <_TUnitPolyfillVersion>9.8.1</_TUnitPolyfillVersion>
+        <_TUnitPolyfillVersion>9.9.0</_TUnitPolyfillVersion>
         <_TUnitNeedsPolyfill Condition="'$(TargetFramework)' == 'netstandard2.0' or '$(TargetFramework)' == 'netstandard2.1' or '$(TargetFrameworkIdentifier)' == '.NETFramework'">true</_TUnitNeedsPolyfill>
     </PropertyGroup>