diff --git a/configure.ac b/configure.ac
index 3216539561..f1fa25d8ae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT(nix, "0.9")
+AC_INIT(nix, "0.10")
 AC_CONFIG_SRCDIR(README)
 AC_CONFIG_AUX_DIR(config)
 AM_INIT_AUTOMAKE([dist-bzip2 foreign])