diff --git a/src/ffi.rs b/src/ffi.rs
index bc0ebcd..47417a4 100644
--- a/src/ffi.rs
+++ b/src/ffi.rs
@@ -13,6 +13,7 @@ pub enum QVariantList {}
 pub enum QrsVariantType {
     Invalid = 0,
     Int64,
+    Bool,
     String
 }
 
diff --git a/src/lib.rs b/src/lib.rs
index 10fb0f1..3a4d852 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,3 +1,4 @@
+#![feature(custom_attribute)]
 extern crate libc;
 
 use libc::{c_char, c_int, c_uint, c_void};