diff --git a/ChangeLog b/ChangeLog
index d2a94238..c29ae0b8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,6 +14,7 @@
 - --vips-wbuffer2 turns on threadpool for im_iterate as well
 - im_vips2tiff() uses vips_sink() instead of threadgroup
 - strip out threadgroup
+- add --enable-debug=xxx flag
 
 16/1/10 started 7.21.2
 - "invalidate" is careful to keep images alive, so invalidate callbacks can do
diff --git a/TODO b/TODO
index de0d6c27..11236c01 100644
--- a/TODO
+++ b/TODO
@@ -1,4 +1,8 @@
 
+- im_iterate() is deprecated: change to vips_sink() throughout
+
+
+
 - expose more of the tone funcs in nip2
 
 - quite a few hist operations have no GUI ... lhisteq, for example? or