1 files changed, 1 insertions, 1 deletions
diff --git a/src/main/scala/cc/spray/json/lenses/Operations.scala b/src/main/scala/cc/spray/json/lenses/Operations.scala
index daa7065..3bf6386 100644
--- a/src/main/scala/cc/spray/json/lenses/Operations.scala
+++ b/src/main/scala/cc/spray/json/lenses/Operations.scala
@@ -14,7 +14,7 @@ trait Operations {
     def apply(value: SafeJsValue): SafeJsValue = value.flatMap(apply)
   }
 
-  def updated[T: MonadicReader : JsonWriter](f: T => T): Operation = new MapOperation {
+  def updated[T: Reader : JsonWriter](f: T => T): Operation = new MapOperation {
     def apply(value: JsValue): SafeJsValue =
       value.as[T] map (v => f(v).toJson)
   }