diff --git a/NEWS b/NEWS
index 83251cdc1..49c97731b 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,8 @@
-New in spot 2.8.4  (2019-12-08)
+New in spot 2.8.4.dev (not yet released)
+
+  Nothing yet.
+
+New in spot 2.8.4 (2019-12-08)
 
   Bugs fixed:
 
diff --git a/configure.ac b/configure.ac
index 76a1fec7e..8782a1344 100644
--- a/configure.ac
+++ b/configure.ac
@@ -21,7 +21,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 AC_PREREQ([2.63])
-AC_INIT([spot], [2.8.4], [spot@lrde.epita.fr])
+AC_INIT([spot], [2.8.4.dev], [spot@lrde.epita.fr])
 AC_CONFIG_AUX_DIR([tools])
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([1.11 gnu tar-ustar color-tests parallel-tests])