Update CHANGELOG.md.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index af8fcb8..e523741 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,6 +22,15 @@ Changes:
Refer to [CommonMark 0.31](https://spec.commonmark.org/0.31/) for full
specification.
+Fixes:
+
+ - [#230](https://github.com/mity/md4c/issues/230):
+ The fix [#223](https://github.com/mity/md4c/issues/223) in 0.5.1 release
+ was incomplete and one corner case remained unfixed. This is now addressed.
+
+ - [#231](https://github.com/mity/md4c/issues/231):
+ `md2html --full-html` now emits `<meta charset="UTF-8">` in the HTML header.
+
## Version 0.5.1