diff --git a/TODO.txt b/TODO.txt
index d62c1c09..dab6fb56 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -10,6 +10,8 @@ Version 0.10
 * Remove deprecated parameter `depth` in `skimage.segmentation.random_walker`
 * Remove deprecated logger function in `skimage/__init__.py`
 * Remove deprecated function `filter.median_filter`
+* Remove deprecated `skimage.color.is_gray` and `skimage.color.is_rgb`
+  functions
 
 Version 0.9
 -----------