Just cause I wanna

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 4f8b2ee..5f46bca 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,4 +1,5 @@
 v2.21
+For preventing issues we recommend you to remove Shadow & Light and install it again instead of usual updating process due to some files have been moved or renamed.
 Additions:
 - New options to control visibility of quest log in sertain areas. It can be full, minimized or hidden.
 Changes: