diff --git a/README.md b/README.md
index 06b392e..6a5e936 100644
--- a/README.md
+++ b/README.md
@@ -40,3 +40,6 @@ My collection of solutions in JavaScript for Codility lessons. Started as a refe
 ### Lesson 8 - Leader
 1. [EquiLeader](EquiLeader.md)
 1. [Dominator](Dominator.md)
+
+### Lesson 9 - Maximum slice problem
+1. [MaxDoubleSlice](MaxDoubleSlice.md)