diff --git a/configure.ac b/configure.ac
index afedc030..5fd95da4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,10 +4,10 @@ dnl update libostree-released.sym from libostree-devel.sym, and update the check
 dnl in test-symbols.sh, and also set is_release_build=yes below.  Then make
 dnl another post-release commit to bump the version, and set is_release_build=no.
 m4_define([year_version], [2018])
-m4_define([release_version], [5])
+m4_define([release_version], [6])
 m4_define([package_version], [year_version.release_version])
 AC_INIT([libostree], [package_version], [walters@verbum.org])
-is_release_build=yes
+is_release_build=no
 AC_CONFIG_HEADER([config.h])
 AC_CONFIG_MACRO_DIR([buildutil])
 AC_CONFIG_AUX_DIR([build-aux])
diff --git a/src/libostree/libostree-devel.sym b/src/libostree/libostree-devel.sym
index 46ad280c..b217e3e5 100644
--- a/src/libostree/libostree-devel.sym
+++ b/src/libostree/libostree-devel.sym
@@ -18,13 +18,15 @@
 ***/
 
 /* Add new symbols here.  Release commits should copy this section into -released.sym. */
+LIBOSTREE_2018.6 {
+} LIBOSTREE_2018.5;
 
 /* Stub section for the stable release *after* this development one; don't
  * edit this other than to update the last number.  This is just a copy/paste
  * source.  Replace $LASTSTABLE with the last stable version, and $NEWVERSION
  * with whatever the next version with new symbols will be.
-LIBOSTREE_2017.$NEWVERSION {
+LIBOSTREE_2018.$NEWVERSION {
 global:
   someostree_symbol_deleteme;
-} LIBOSTREE_2017.$LASTSTABLE;
+} LIBOSTREE_2018.$LASTSTABLE;
 */