diff --git a/README.md b/README.md
index bf4d52f..5e9a71d 100644
--- a/README.md
+++ b/README.md
@@ -104,3 +104,6 @@ busted
 * Fix several errors and inconsistencies in the way the comparisons where implemented.
 * Added a lot more tests to cover more edge cases when comparing versions
 
+## v.1.2.1
+* Fix error on pessimistic update operator when applied to a 0.x.x version
+