diff --git a/pkgs/tools/X11/xprintidle-ng/default.nix b/pkgs/tools/X11/xprintidle-ng/default.nix
index 758450d36545..61e48de7f5e1 100644
--- a/pkgs/tools/X11/xprintidle-ng/default.nix
+++ b/pkgs/tools/X11/xprintidle-ng/default.nix
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace configure.ac \
-      --replace "AC_PREREQ([2.62])" "AC_PREREQ([2.63])"
+      --replace "AC_PREREQ([2.62])" "AC_PREREQ([2.64])"
   '';
 
   nativeBuildInputs = [