diff --git a/pkgs/base/info.rkt b/pkgs/base/info.rkt
index effd327adf..3df9b82f06 100644
--- a/pkgs/base/info.rkt
+++ b/pkgs/base/info.rkt
@@ -12,7 +12,7 @@
 
 (define collection 'multi)
 
-(define version "6.4.0.8")
+(define version "6.4.0.9")
 
 (define deps `("racket-lib"
                ["racket" #:version ,version]))
diff --git a/racket/src/racket/src/schvers.h b/racket/src/racket/src/schvers.h
index 884697452a..910951a726 100644
--- a/racket/src/racket/src/schvers.h
+++ b/racket/src/racket/src/schvers.h
@@ -13,12 +13,12 @@
    consistently.)
 */
 
-#define MZSCHEME_VERSION "6.4.0.8"
+#define MZSCHEME_VERSION "6.4.0.9"
 
 #define MZSCHEME_VERSION_X 6
 #define MZSCHEME_VERSION_Y 4
 #define MZSCHEME_VERSION_Z 0
-#define MZSCHEME_VERSION_W 8
+#define MZSCHEME_VERSION_W 9
 
 #define MZSCHEME_VERSION_MAJOR ((MZSCHEME_VERSION_X * 100) + MZSCHEME_VERSION_Y)
 #define MZSCHEME_VERSION_MINOR ((MZSCHEME_VERSION_Z * 1000) + MZSCHEME_VERSION_W)