diff --git a/ChangeLog.md b/ChangeLog.md
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--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,14 @@
 # Changelog
 
+## Unreleased
+### Features
+* Added `utils::randombytes_array()` function to create fixed-sized arrays of random numbers
+
+### Changes
+* Previously, signing up a new user would generate a 32-byte salt, then hash the password using only the first 16 bytes.
+  Now, only 16 bytes of salt are generated for new signups.
+* Signing up a new user using a main key instead of a password no longer generates and stores an (unused) password hash.
+
 ## Version 0.5.3
 * Upgrade dependencies - ignore package lock. Upgrade to absolute latest.