diff --git a/website/docs/index.md b/website/docs/index.md
index 0067d60..49aaf08 100644
--- a/website/docs/index.md
+++ b/website/docs/index.md
@@ -29,3 +29,4 @@ right place, please start the subject with **CS839**.
 - **Instructor**: [Justin Hsu](https://justinh.su)
 - **Email**: justhsu@cs.wisc.edu
 - **Location**: CS 6379
+- **Office hours**: By appointment