diff --git a/libratbox/include/serno.h b/libratbox/include/serno.h
index 01d83fe9..a4ba0547 100644
--- a/libratbox/include/serno.h
+++ b/libratbox/include/serno.h
@@ -1 +1 @@
-#define SERNO "20081221-ce6b9f338462"
+#define SERIALNUM "20081213_1-26296"