diff --git a/README.md b/README.md
index 8e7e6ad..5d6ed93 100644
--- a/README.md
+++ b/README.md
@@ -148,7 +148,7 @@ Make sure you're capable of using the following development tools:
 
 For details, see <https://gg.kaist.ac.kr/course/12>.
 
-Read the documentation: <https://public.fearless.systems/jeehoon.kang/class/cs220/cs220/>.
+Read the documentation: <https://cp.kaist.ac.kr/cs220/cs220/>.
 
 
 ### Midterm and final exams (60%)