diff --git a/libguestfs.spec b/libguestfs.spec
index 04d4c7b..83dca66 100644
--- a/libguestfs.spec
+++ b/libguestfs.spec
@@ -523,7 +523,7 @@ python-%{name} contains Python bindings for %{name}.
 Summary:       Ruby bindings for %{name}
 Group:         Development/Libraries
 Requires:      %{name} = %{epoch}:%{version}-%{release}
-Requires:      ruby(abi) = 1.8
+Requires:      ruby(abi) = 1.9.1
 Requires:      ruby
 Provides:      ruby(guestfs) = %{version}