diff --git a/lib/flutter_screenutil.dart b/lib/flutter_screenutil.dart
index 81121ed..fba6b96 100644
--- a/lib/flutter_screenutil.dart
+++ b/lib/flutter_screenutil.dart
@@ -5,5 +5,7 @@
 
 library flutter_screenutil;
 
+export 'src/r_padding.dart';
 export 'src/screen_util.dart';
 export 'src/screenutil_init.dart';
+export 'src/size_extension.dart';