diff --git a/Cask b/Cask
index 7a86d42..35459ea 100644
--- a/Cask
+++ b/Cask
@@ -7,7 +7,6 @@
 (files "esup-child.el")
 
 (depends-on "cl-lib" "0.5")
-(depends-on "s" "1.2")
 
 (development
  (depends-on "dash")