diff --git a/docs/docs/tutorial/gtk/src/BoxLayout/BoxLayout.csproj b/docs/docs/tutorial/gtk/src/BoxLayout/BoxLayout.csproj
index 29d4a6168..369fe61a8 100644
--- a/docs/docs/tutorial/gtk/src/BoxLayout/BoxLayout.csproj
+++ b/docs/docs/tutorial/gtk/src/BoxLayout/BoxLayout.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="gircore.gtk-4.0" Version="0.5.0" />
+    <ProjectReference Include="..\..\..\..\..\..\src\Libs\Gtk-4.0\Gtk-4.0.csproj" />
   </ItemGroup>
 
 </Project>
diff --git a/docs/docs/tutorial/gtk/src/HelloWorld/HelloWorld.csproj b/docs/docs/tutorial/gtk/src/HelloWorld/HelloWorld.csproj
index 29d4a6168..369fe61a8 100644
--- a/docs/docs/tutorial/gtk/src/HelloWorld/HelloWorld.csproj
+++ b/docs/docs/tutorial/gtk/src/HelloWorld/HelloWorld.csproj
@@ -8,7 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="gircore.gtk-4.0" Version="0.5.0" />
+    <ProjectReference Include="..\..\..\..\..\..\src\Libs\Gtk-4.0\Gtk-4.0.csproj" />
   </ItemGroup>
 
 </Project>