diff --git a/TODO b/TODO
index 04fe80a9..f63987f6 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,7 @@
+- vipsthumbnail needs non-square BBs, perhaps
+
+	--size 200x300
+
 - do conv and morph quickly as simple wrappers over the vips7 operations
 
 - add vips_gaussian_blur() with approx / int / float precision, maybe