diff --git a/README-development.md b/README-development.md
index 771a34e..3ed05a4 100644
--- a/README-development.md
+++ b/README-development.md
@@ -16,7 +16,7 @@ After pushing check cross-platform compilation results on commits list on GitHub
 
 1. Create a commit setting version to stable:
   - ChangeLog: change UNRELEASED to current date
-  - Makefile: strip -UNRELEASED from version number
+  - Makefile and configure.ac: strip -UNRELEASED from version number
   - README: remove UNRELEASED
 2. Make sure it works: `make clean test package`
 3. Git-tag this version like "v2.8.5"
diff --git a/configure.ac b/configure.ac
index 5299a01..eff6360 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,14 +2,14 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.69])
-AC_INIT([opendetex], [2.8.5], [BUG-REPORT-ADDRESS])
+AC_INIT([opendetex], [2.8.6-UNRELEASED], [BUG-REPORT-ADDRESS])
 AC_CONFIG_SRCDIR([detex.h])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_AUX_DIR([aux_files])
 AC_CONFIG_MACRO_DIR([m4])
 AC_REQUIRE_AUX_FILE([tap-driver.sh])
 
-AM_INIT_AUTOMAKE([foreign])
+AM_INIT_AUTOMAKE([foreign dist-bzip2])
 
 # Checks for programs.
 AC_PROG_CC