diff --git a/include/minix/config.h b/include/minix/config.h
index 49350a8d5..9018639f2 100644
--- a/include/minix/config.h
+++ b/include/minix/config.h
@@ -3,7 +3,7 @@
 
 /* Minix release and version numbers. */
 #define OS_RELEASE "3"
-#define OS_VERSION "2.0"
+#define OS_VERSION "2.1"
 
 /* This file sets configuration parameters for the MINIX kernel, FS, and PM.
  * It is divided up into two main sections.  The first section contains