diff --git a/CHANGELOG.md b/CHANGELOG.md
index 60b1b1d0..8edebc27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 - Added a new bignum type to support exact integers of practically unlimited size.
 - As part of the bignum changes, modified the code for exact integer arithmetic to detect overflow.
+- Added documentation for the [C API](http://justinethier.github.io/cyclone/c-api/modules.html).
 
 ## 0.3.4 - February 10, 2017