diff --git a/scripts/aoc.rkt b/scripts/aoc.rkt
index b42ea48..ff7136c 100644
--- a/scripts/aoc.rkt
+++ b/scripts/aoc.rkt
@@ -1,10 +1,10 @@
-#lang racket
+#lang curly-fn racket
 
 ;; utilities for every challenge script
 
 (require "aoc-lib.rkt" threading syntax/parse/define (for-syntax racket/syntax) graph)
 (provide answer dbg memoize define/memoized
-         band bor bxor bshl bshr
+         band bor bxor bnot bshl bshr bset? bfield
          (all-from-out threading syntax/parse/define graph)
          (for-syntax (all-from-out racket/syntax)))
 
@@ -16,8 +16,11 @@
 (define band bitwise-and)
 (define bor bitwise-ior)
 (define bxor bitwise-xor)
+(define bnot bitwise-not)
 (define bshl arithmetic-shift)
 (define bshr #{arithmetic-shift %1 (- %2)})
+(define bset? bitwise-bit-set?)
+(define bfield bitwise-bit-field)
 
 ;; makes a memoization wrapper around a function
 (define (memoize func)