diff --git a/src/version.h b/src/version.h
index 719b5561f4..3969e11c17 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "17 Sep 2011"
+#define LAMMPS_VERSION "23 Sep 2011"