diff --git a/CHANGELOG.md b/CHANGELOG.md
index f905de73..9fc82a93 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 Features
 
+- Improve performance in generated C code by allocating data for closures statically where possible, instead of via `alloca`.
 - Speed up `case` expressions by using nested `if` expressions instead of the `memv` primitive to evaluate conditions with more than one constant. The nested expressions have better cache locality and also avoid any additional object allocation or initialization.
 - Allow passing the `'bin` symbol to `Cyc-installation-dir` to return the location of the installation directory for binaries.