diff --git a/TODO.md b/TODO.md
index 2c3612cc..9c07b72d 100644
--- a/TODO.md
+++ b/TODO.md
@@ -56,6 +56,7 @@ https://zhuanlan.zhihu.com/p/39369370
 #### Before 1.0 (Optional)
 - [ ] `<eval Ref="Name"/>` and `<eval Eval="expression"/>` tags
 - [ ] Enable Workflow script template for IGuiInstanceLoader written in text
+- [ ] INativeImage::SaveToStream handle correctly for git format. It is possible that LoadFromStream need to process diff between git raw frames.
 
 #### Graphics
 - [ ] MetaImageElement and MetaImage data structure