diff --git a/src/3/03-tree-building/TreeBuilding.fsproj b/src/3/03-tree-building/TreeBuilding.fsproj
index 736d894..899d1a4 100644
--- a/src/3/03-tree-building/TreeBuilding.fsproj
+++ b/src/3/03-tree-building/TreeBuilding.fsproj
@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>netcoreapp8</TargetFramework>
+    <TargetFramework>net8.0</TargetFramework>
 
     <IsPackable>false</IsPackable>