diff --git a/beautiful-racket-lib/br/eopl.rkt b/beautiful-racket-lib/br/eopl.rkt
index d7c8cc9..5062b6c 100644
--- a/beautiful-racket-lib/br/eopl.rkt
+++ b/beautiful-racket-lib/br/eopl.rkt
@@ -1,5 +1,5 @@
 #lang br
-(require rackunit racket/struct (for-syntax br/datum))
+(require racket/struct (for-syntax br/datum))
 (provide define-datatype cases occurs-free?)
 
 #;(begin
@@ -88,9 +88,10 @@
               (occurs-free? search-var rand))]))
 
 
-
-(check-true (occurs-free? 'foo (var-exp 'foo)))
-(check-false (occurs-free? 'foo (var-exp 'bar)))
-(check-false (occurs-free? 'foo (lambda-exp 'foo (var-exp 'bar))))
-(check-true (occurs-free? 'foo (lambda-exp 'bar (var-exp 'foo))))
-(check-true (occurs-free? 'foo (lambda-exp 'bar (lambda-exp 'zim (lambda-exp 'zam (var-exp 'foo))))))
\ No newline at end of file
+(module+ test
+  (require rackunit)
+  (check-true (occurs-free? 'foo (var-exp 'foo)))
+  (check-false (occurs-free? 'foo (var-exp 'bar)))
+  (check-false (occurs-free? 'foo (lambda-exp 'foo (var-exp 'bar))))
+  (check-true (occurs-free? 'foo (lambda-exp 'bar (var-exp 'foo))))
+  (check-true (occurs-free? 'foo (lambda-exp 'bar (lambda-exp 'zim (lambda-exp 'zam (var-exp 'foo)))))))
\ No newline at end of file
diff --git a/beautiful-racket/info.rkt b/beautiful-racket/info.rkt
index c64e702..0494352 100644
--- a/beautiful-racket/info.rkt
+++ b/beautiful-racket/info.rkt
@@ -2,7 +2,7 @@
 (define collection 'multi)
 
 (define version "0.01")
-(define deps '("base" "sugar" "beautiful-racket-lib" "rackunit-lib" "ragg"))
+(define deps '("base" "sugar" "beautiful-racket-lib" "rackunit-lib" "ragg" "parser-tools-lib"))
 (define build-deps '("racket-doc"))
 
 (define test-omit-paths '("br/bf"))
\ No newline at end of file