diff --git a/src/version.h b/src/version.h
index a817d6bd10..b84bf6ad13 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "15 May 2010"
+#define LAMMPS_VERSION "18 May 2010"