diff --git a/graphviz.spec b/graphviz.spec
index 650d1bf..18d1ef1 100644
--- a/graphviz.spec
+++ b/graphviz.spec
@@ -360,6 +360,7 @@ Static development package for %{name}.
 %prep
 %setup -q
 %patch0 -p0 -b .link
+sed -i s,"ruby-1.9","ruby-2.1",g configure.ac
 
 %build
 autoreconf -fi