diff --git a/info.rkt b/info.rkt
index 59a96c5..ce88d54 100644
--- a/info.rkt
+++ b/info.rkt
@@ -1,5 +1,5 @@
 #lang info
 (define collection "css-tools")
 (define scribblings '(("scribblings/css-tools.scrbl" ())))
-(define deps '("base" "sugar"))
+(define deps '(("base" #:version "6.0") "sugar"))
 (define build-deps '("scribble-lib"))