diff --git a/CHANGELOG.md b/CHANGELOG.md
index 629a78b3..8e53627a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ Bug Fixes
 
 - Fixed a bug where `current-jiffy` was returning total clock time of the process, which cannot be used to measure time accurately when more than one thread is executing concurrently.
 - Allow optimizer to beta expand a wider range of function calls and prevent an infinite loop by beta expanding a recursive function with itself.
+ TODO: and now (scheme base) will not build. may need to revert fnc-depth>= back from 5 to 4.
 
 ## 0.8 - May 30, 2018