diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1337cbf..af2b381 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -19,6 +19,7 @@ Record of the modification in project development.
 ### Fixed
 - [Issue 8 : Wrong message after cancellation ](https://github.com/suikan4github/kaiten-yaki/8)
 - [Issue 15 : CITERTIME parameter is not passed to the chrooted_job ](https://github.com/suikan4github/kaiten-yaki/15)
+- [Issue 17 : Unmount fails ](https://github.com/suikan4github/kaiten-yaki/17)
 
 ### Known Issue