diff --git a/ChangeLog b/ChangeLog
index d13a9b3d4..474b24a38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2005-01-31  Alexandre Duret-Lutz  <adl@src.lip6.fr>
 
+	* configure.ac, NEWS: Bump version to 0.1a.
+
 	* configure.ac, NEWS: Bump version to 0.1.
 
 2005-01-30  Alexandre Duret-Lutz  <adl@src.lip6.fr>
diff --git a/NEWS b/NEWS
index aad974480..fe56f4f8a 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,5 @@
+New in spot 0.1a:
+
 New in spot 0.1 (2005-01-31):
 
   * Emptiness checks:
diff --git a/configure.ac b/configure.ac
index 1bf3f7584..08f2e09be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,7 +20,7 @@
 # 02111-1307, USA.
 
 AC_PREREQ([2.59])
-AC_INIT([spot], [0.1])
+AC_INIT([spot], [0.1a])
 AC_CONFIG_AUX_DIR([tools])
 AM_INIT_AUTOMAKE([1.9 gnits nostdinc tar-ustar])