diff --git a/CHANGELOG.md b/CHANGELOG.md
index f7910bf27..344cbb08b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,8 @@
 ## Unreleased
 
 - Updated for Gleam v0.32.0 syntax.
+- The `base` module has been deprecated in favour of the new `bit_array`
+  module.
 - The `bit_string` module has been deprecated in favour of the new `bit_array`
   module.
 - The `bit_builder` module has been deprecated in favour of the new