diff --git a/collects/launcher/launcher-sig.ss b/collects/launcher/launcher-sig.ss
index 1b5d41289b..25ba8c2bad 100644
--- a/collects/launcher/launcher-sig.ss
+++ b/collects/launcher/launcher-sig.ss
@@ -1,30 +1,47 @@
-
 #lang scheme/signature
 
+make-gracket-launcher
+make-racket-launcher
 make-mred-launcher
 make-mzscheme-launcher
 
+make-gracket-program-launcher
+make-racket-program-launcher
 make-mred-program-launcher
 make-mzscheme-program-launcher
 
+gracket-program-launcher-path
+racket-program-launcher-path
 mred-program-launcher-path
 mzscheme-program-launcher-path
 
+install-gracket-program-launcher
+install-racket-program-launcher
 install-mred-program-launcher
 install-mzscheme-program-launcher
 
+gracket-launcher-up-to-date?
+racket-launcher-up-to-date?
 mred-launcher-up-to-date?
 mzscheme-launcher-up-to-date?
 
+gracket-launcher-is-directory?
+racket-launcher-is-directory?
 mred-launcher-is-directory?
 mzscheme-launcher-is-directory?
 
+gracket-launcher-is-actually-directory?
+racket-launcher-is-actually-directory?
 mred-launcher-is-actually-directory?
 mzscheme-launcher-is-actually-directory?
 
+gracket-launcher-add-suffix
+racket-launcher-add-suffix
 mred-launcher-add-suffix
 mzscheme-launcher-add-suffix
 
+gracket-launcher-put-file-extension+style+filters
+racket-launcher-put-file-extension+style+filters
 mred-launcher-put-file-extension+style+filters
 mzscheme-launcher-put-file-extension+style+filters
 
@@ -32,3 +49,5 @@ build-aux-from-path
 current-launcher-variant
 available-mred-variants
 available-mzscheme-variants
+available-gracket-variants
+available-racket-variants