diff --git a/src/version.h b/src/version.h
index d0d5c61a06..7c2fdc17d3 100644
--- a/src/version.h
+++ b/src/version.h
@@ -1 +1 @@
-#define LAMMPS_VERSION "16 Dec 2011"
+#define LAMMPS_VERSION "19 Dec 2011"