diff --git a/m4/version-set.m4 b/m4/version-set.m4
index 4778119..7fa2956 100644
--- a/m4/version-set.m4
+++ b/m4/version-set.m4
@@ -1,13 +1,13 @@
 dnl Product version for header files. Maintained by dist/bump-version.sh
 VERSION_MAJOR=0
-VERSION_MINOR=3
+VERSION_MINOR=4
 VERSION_PATCH=0
-VERSION_STRING='"0.3.0 (2014-06-16)"'
+VERSION_STRING='"0.4.0 (2014-09-05)"'
 
 AC_SUBST(VERSION_MAJOR)
 AC_SUBST(VERSION_MINOR)
 AC_SUBST(VERSION_PATCH)
 AC_SUBST(VERSION_STRING)
 
-VERSION_NOPATCH=0.3
+VERSION_NOPATCH=0.4
 AC_SUBST(VERSION_NOPATCH)
diff --git a/m4/version.m4 b/m4/version.m4
index 1ff9c1c..33270aa 100644
--- a/m4/version.m4
+++ b/m4/version.m4
@@ -1,2 +1,2 @@
 dnl Product version for AC_INIT. Maintained by dist/bump-version.sh
-0.3.0
+0.4.0