diff --git a/sys/dev/filemon/filemon.h b/sys/dev/filemon/filemon.h
index 95d2ef3b17d8..b3fa061727eb 100644
--- a/sys/dev/filemon/filemon.h
+++ b/sys/dev/filemon/filemon.h
@@ -30,5 +30,5 @@
 #define FILEMON_SET_FD		_IOWR('S', 1, int)
 #define FILEMON_SET_PID		_IOWR('S', 2, pid_t)
 
-#define FILEMON_VERSION		4	/* output format
+#define FILEMON_VERSION		5	/* output format
 					   (bump when adding record types) */