diff --git a/src/version.h b/src/version.h
index 05417b53bf..ba2fd44276 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "22 Apr 2010"
+#define LAMMPS_VERSION "23 Apr 2010"