diff --git a/dlangui-monod-linux.dproj b/dlangui-monod-linux.dproj
index b9a0ee0d..adb6f623 100644
--- a/dlangui-monod-linux.dproj
+++ b/dlangui-monod-linux.dproj
@@ -303,6 +303,7 @@
     <Compile Include="src\dlangui\graphics\scene\objimport.d" />
     <Compile Include="src\dlangui\graphics\scene\scene3d.d" />
     <Compile Include="src\dlangui\graphics\scene\transform.d" />
+    <Compile Include="src\dlangui\graphics\scene\skybox.d" />
     <Compile Include="src\dlangui\graphics\xpm\xpmcolors.d" />
     <Compile Include="src\dlangui\graphics\xpm\reader.d" />
     <Compile Include="src\dlangui\platforms\common\platform.d" />
diff --git a/dlangui-monod-osx.dproj b/dlangui-monod-osx.dproj
index a9e7d8ff..9bcd7891 100644
--- a/dlangui-monod-osx.dproj
+++ b/dlangui-monod-osx.dproj
@@ -152,6 +152,7 @@
     <Compile Include="src\dlangui\graphics\scene\objimport.d" />
     <Compile Include="src\dlangui\graphics\scene\scene3d.d" />
     <Compile Include="src\dlangui\graphics\scene\transform.d" />
+    <Compile Include="src\dlangui\graphics\scene\skybox.d" />
     <Compile Include="src\dlangui\graphics\xpm\reader.d" />
     <Compile Include="src\dlangui\platforms\common\platform.d" />
     <Compile Include="src\dlangui\platforms\sdl\sdlapp.d" />
diff --git a/dlangui-monod-windows.dproj b/dlangui-monod-windows.dproj
index c4f80550..8bfa6627 100644
--- a/dlangui-monod-windows.dproj
+++ b/dlangui-monod-windows.dproj
@@ -142,6 +142,7 @@
     <Compile Include="src\dlangui\graphics\scene\objimport.d" />
     <Compile Include="src\dlangui\graphics\scene\scene3d.d" />
     <Compile Include="src\dlangui\graphics\scene\transform.d" />
+    <Compile Include="src\dlangui\graphics\scene\skybox.d" />
     <Compile Include="src\dlangui\graphics\xpm\xpmcolors.d" />
     <Compile Include="src\dlangui\graphics\xpm\reader.d" />
     <Compile Include="src\dlangui\platforms\common\platform.d" />