diff --git a/configure.ac b/configure.ac
index bba5d00..5b7c5d4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_PREREQ([2.69])
+AC_PREREQ([2.68])
 AC_INIT([glorytun], [0.0.1],
         [https://github.com/angt/glorytun/issues],
         [glorytun],