diff --git a/core.rkt b/core.rkt
index 26408b4..19fb2c9 100644
--- a/core.rkt
+++ b/core.rkt
@@ -1,6 +1,6 @@
 #lang racket/base
 (require racket/string racket/list)
-(require sugar/string sugar/coercion/values)
+(require sugar/string sugar/coerce)
 
 (provide (all-defined-out))
 
diff --git a/info.rkt b/info.rkt
index 4a9b0ff..53d8e20 100644
--- a/info.rkt
+++ b/info.rkt
@@ -1,3 +1,3 @@
 #lang info
-(define collection "chirp")
-(define scribblings '(("scribblings/chirp.scrbl" ())))
\ No newline at end of file
+(define collection "css-tools")
+(define scribblings '(("scribblings/css-tools.scrbl" ())))
\ No newline at end of file
diff --git a/math.rkt b/math.rkt
index 65cd244..4e7d003 100644
--- a/math.rkt
+++ b/math.rkt
@@ -1,7 +1,7 @@
 #lang racket/base
-(require "core.rkt" racket/match sugar/define/contract sugar/container sugar/coercion/values racket/string racket/list)
+(require "core.rkt" racket/match)
 
-(define+provide/contract (css-unit? x)
+(define/contract (css-unit? x)
   (any/c . -> . boolean?)
   (x . in? . '("%" "in" "cm" "mm" "em" "ex" "pt" "pc" "px" "rem")))
 
@@ -10,17 +10,17 @@
   [(define write-proc 
      (λ(x port mode) (display (format "~a~a" (cssq-num x) (cssq-unit x)) port)))])
 
-(define+provide/contract (cssqish? x)
+(define/contract (cssqish? x)
   (any/c . -> . boolean?)
   (->boolean (or (cssq? x) (string? x))))
 
-(define+provide/contract (string->unit x)
+(define/contract (string->unit x)
   (string? . -> . css-unit?)
   (if (css-unit? x)
       x
       (error 'string->unit "'~a' not a valid css unit" x)))
 
-(define+provide/contract (cssqish->cssq x)
+(define/contract (cssqish->cssq x)
   (cssqish? . -> . cssq?)
   (cond
     [(cssq? x) x]
@@ -34,7 +34,7 @@
                      (list (string->number (first pieces)) 
                            (string->unit (second pieces))))))]))
 
-(define+provide/contract (css-math-op op left right)
+(define/contract (css-math-op op left right)
   (procedure? cssqish? cssqish? . -> . cssq?)
   (let ([left (cssqish->cssq left)]
         [right (cssqish->cssq right)])
diff --git a/scribblings/chirp.scrbl b/scribblings/css-tools.scrbl
similarity index 51%
rename from scribblings/chirp.scrbl
rename to scribblings/css-tools.scrbl
index f6477d8..a9f6561 100644
--- a/scribblings/chirp.scrbl
+++ b/scribblings/css-tools.scrbl
@@ -3,34 +3,34 @@
 @(require scribble/eval (for-label racket "../main.rkt"))
 
 @(define my-eval (make-base-eval))
-@(my-eval `(require chirp))
+@(my-eval `(require css-tools))
 
 
-@title{chirp}
+@title{css-tools}
 
 @author[(author+email "Matthew Butterick" "mb@mbtype.com")]
 
-Chirp = CSS & HTML Racket preprocessor.
+A collection of little functions that help make Racket code more readable.
 
 @section{Installation & updates}
 
 At the command line:
-@verbatim{raco pkg install chirp}
+@verbatim{raco pkg install css-tools}
 
 After that, you can update the package from the command line:
-@verbatim{raco pkg update chirp}
+@verbatim{raco pkg update css-tools}
 
 
 @section{Interface}
 
-@defmodule[chirp]
+@defmodule[css-tools]
 
-Hello chirp.
+Hello css-tools.
 
 
 @section{License & source code}
 
 This module is licensed under the LGPL.
 
-Source repository at @link["http://github.com/mbutterick/chirp"]{http://github.com/mbutterick/chirp}. Suggestions & corrections welcome.
+Source repository at @link["http://github.com/mbutterick/css-tools"]{http://github.com/mbutterick/css-tools}. Suggestions & corrections welcome.