diff --git a/src/version.h b/src/version.h
index 1e333d635d..5da7f78a7a 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "25 May 2013"
+#define LAMMPS_VERSION "26 May 2013"