diff --git a/racket/src/mac/osx_appl.rkt b/racket/src/mac/osx_appl.rkt
index ce9bd6956a..971f780696 100644
--- a/racket/src/mac/osx_appl.rkt
+++ b/racket/src/mac/osx_appl.rkt
@@ -11,8 +11,9 @@
 (module osx_appl mzscheme
 
   (require (lib "plist.rkt" "xml")
-	   mzlib/process
-	   mzlib/file)
+	   racket/system
+	   racket/file
+           racket/path)
 
   (define rez-path (or (getenv "REZ")
 		       "/Developer/Tools/Rez"))
diff --git a/racket/src/racket/gc/upgrade.rkt b/racket/src/racket/gc/upgrade.rkt
index 1374d2a481..2368857c8c 100644
--- a/racket/src/racket/gc/upgrade.rkt
+++ b/racket/src/racket/gc/upgrade.rkt
@@ -3,8 +3,7 @@
 (define new-dir "~/Desktop/gc6.7")
 (define really-git? #t)
 
-(require mzlib/file
-	 mzlib/process)
+(require racket/file racket/path racket/system)
 
 (define old (make-hash-table 'equal))
 (define new (make-hash-table 'equal))
diff --git a/racket/src/worksp/gc2/make.rkt b/racket/src/worksp/gc2/make.rkt
index 8bb0e96927..d4fccdde79 100644
--- a/racket/src/worksp/gc2/make.rkt
+++ b/racket/src/worksp/gc2/make.rkt
@@ -3,7 +3,7 @@
 (use-compiled-file-paths null)
 
 (require mzlib/restart
-         mzlib/process)
+         racket/system)
 
 (define (system- s)
   (eprintf "~a\n" s)