diff --git a/configure.ac b/configure.ac
index 07f330071..6e77452cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@
 # redistribute it and/or modify it under the terms of either the GNU Lesser
 # General Public License Version 3 or the Perl Artistic License Version 2.0.
 
-AC_INIT([Verilator],[3.840 2012-07-31])
+AC_INIT([Verilator],[3.841 devel])
 AC_CONFIG_HEADER(src/config_build.h)
 AC_CONFIG_FILES(Makefile src/Makefile src/Makefile_obj include/verilated.mk)