diff --git a/configure.in b/configure.in
index 8c5a21028..8538493f2 100644
--- a/configure.in
+++ b/configure.in
@@ -1,4 +1,4 @@
-AC_PREREQ(2.59)
+AC_PREREQ(2.61)
 AC_INIT(configure.in)
 
 AC_SEARCH_LIBS([ioperm], [ioperm])