diff --git a/src/version.h b/src/version.h
index 9c24dc5dbd..b721d5df9b 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "9 May 2013"
+#define LAMMPS_VERSION "11 May 2013"