diff --git a/jam/fileunix.c b/jam/fileunix.c
index 9b5e3d2e99..d4f3427f45 100644
--- a/jam/fileunix.c
+++ b/jam/fileunix.c
@@ -58,6 +58,10 @@
 # define STRUCT_DIRENT struct dirent 
 # endif
 
+# ifdef __CYGWIN__
+# include <unistd.h>
+# endif
+
 # ifdef OS_COHERENT
 # include <arcoff.h>
 # define HAVE_AR
diff --git a/jam/patchlevel.h b/jam/patchlevel.h
index fac9205444..e7f8dd074c 100644
--- a/jam/patchlevel.h
+++ b/jam/patchlevel.h
@@ -1,5 +1,5 @@
 /* Keep JAMVERSYM in sync with VERSION. */
 /* It can be accessed as $(JAMVERSION) in the Jamfile. */
 
-#define VERSION "2.5-haiku-20080327"
+#define VERSION "2.5-haiku-20090626"
 #define JAMVERSYM "JAMVERSION=2.5"