diff --git a/CHANGELOG.md b/CHANGELOG.md
index 58fd17a..51680e2 100644
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+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 ### Changed
 
+- Change `webauthn_id` generation from `after_initialize` to `before_validation` and add a data backfill to the `webauthn_id` migration generator for existing records. [@santiagorodriguez96]
 - Options for getting or creating passkeys and security keys are now served by dedicated Rails controllers and retrieved via JavaScript fetch requests. [#73](https://github.com/cedarcode/devise-webauthn/pull/73) [@nicolastemciuc]
 - BREAKING!: Remove helpers for generating WebAuthn options. [#106](https://github.com/cedarcode/devise-webauthn/pull/115) [@nicolastemciuc]
 - BREAKING!: Replace `form_classes:` keyword argument with direct keyword arguments in all form helper methods (`passkey_creation_form_for`, `login_with_passkey_form_for`, `security_key_creation_form_for`, `login_with_security_key_form_for`). All options are delegated to `form_with`, allowing you to pass any HTML attributes or form options directly. [@RenzoMinelli]