diff --git a/HACKING b/HACKING
index 6988c011b..1282428b3 100644
--- a/HACKING
+++ b/HACKING
@@ -21,7 +21,7 @@ generally if you plan to regenerate some of the generated files.
 (None of these tools are required by end users installing a tarball
 since the generated files they produce are distributed.)
 
-  GNU Autoconf >= 2.61
+  GNU Autoconf >= 2.69
   GNU Automake >= 1.11
   GNU Libtool >= 2.4
   GNU Flex >= 2.6
diff --git a/configure.ac b/configure.ac
index 0d11d8cea..09a9ecbc7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,7 +20,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-AC_PREREQ([2.63])
+AC_PREREQ([2.69])
 AC_INIT([spot], [2.9.5.dev], [spot@lrde.epita.fr])
 AC_CONFIG_AUX_DIR([tools])
 AC_CONFIG_MACRO_DIR([m4])