diff --git a/src/version.h b/src/version.h
index e4421c4440..4a58587ea7 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "30 Apr 2010"
+#define LAMMPS_VERSION "1 May 2010"