diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9505797..f118841 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 Changelog
 ==========
 
+Version 5.0.3 *(2019-08-24)*
+----------------------------
+
+ * Added an initial implementation of SOS morse code
+
 Version 5.0.2 *(2019-07-03)*
 ----------------------------