diff --git a/CHANGELOG.md b/CHANGELOG.md
index 69192409..eba9f935 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 Features
 
+IN PROGRESS - bignum support for SRFI 60
+
 - Cyclone now has support in the interpreter for loading libraries via `import`. This is probably the most important change in this release and allows `icyc` to be used to its full potential.
 - Store parameter objects in such a way that changes to a parameter object do not affect other threads that use the same parameter object.