diff --git a/src/version.h b/src/version.h
index ce1579d1af..4ab19a60d9 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "14 Mar 2013"
+#define LAMMPS_VERSION "21 May 2013"