diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ad09a9f..6143877e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,10 +5,15 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+
+## 1.20.1 - 2021-01-21
 ### Changed
 - `id_queue`: Replace default or reset value of signals that were assigned `'x` with `'0`.
 - `id_queue`: Use `cf_math_pkg::idx_width()` for computation of localparams.
 
+### Fixed
+- Add `XSIM` define guard for statements incompatible with `xsim`.
+
 ## 1.20.0 - 2020-11-04
 ### Added
 - assertions: Assertion include header with macros (from lowrisc)