diff --git a/src/teaching/cse-562/2021sp/index.erb b/src/teaching/cse-562/2021sp/index.erb
index 8dd9d4b7..7bc828e8 100644
--- a/src/teaching/cse-562/2021sp/index.erb
+++ b/src/teaching/cse-562/2021sp/index.erb
@@ -30,6 +30,7 @@ schedule:
   - date: "Feb. 18"
     topic: "Relational Algebra Algorithms"
     materials: 
+      homework1: https://autograder.cse.buffalo.edu/courses/CSE562-s21/assessments/homework1
       slides: slide/2021-02-18-QueryAlgorithms.html
   - date: "Feb. 23"
     topic: "Extended Relational Algebra"