diff --git a/src/Bolero.Build/Bolero.Build.targets b/src/Bolero.Build/Bolero.Build.targets
index 2c109ee6..56908d6c 100644
--- a/src/Bolero.Build/Bolero.Build.targets
+++ b/src/Bolero.Build/Bolero.Build.targets
@@ -15,6 +15,10 @@
     <_BoleroApplyCssScopesBeforeTargets>ResolveScopedCssOutputs;CoreCompile</_BoleroApplyCssScopesBeforeTargets>
   </PropertyGroup>
 
+  <ItemGroup Condition="Exists('$(_BoleroScopedCssSourceFile)')">
+    <CompileBefore Include="$(_BoleroScopedCssSourceFile)" />
+  </ItemGroup>
+
   <UsingTask AssemblyFile="$(BoleroTaskAssemblyPath)" TaskName="Bolero.Build.BoleroStripFSharpMetadata"
              Condition="'$(BoleroStripAssemblies)' != 'False'" />
   <UsingTask AssemblyFile="$(BoleroTaskAssemblyPath)" TaskName="Bolero.Build.BoleroApplyCssScopes" />