diff --git a/Cargo.toml b/Cargo.toml
index a634e43..3be02e3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kbinxml"
-version = "0.4.0"
+version = "0.4.1"
 authors = ["Matt Bilker <me@mbilker.us>"]
 
 [dependencies]
diff --git a/src/ser/mod.rs b/src/ser/mod.rs
index 9528918..ca7f157 100644
--- a/src/ser/mod.rs
+++ b/src/ser/mod.rs
@@ -293,18 +293,14 @@ impl<'a> ser::SerializeMap for &'a mut Serializer {
     where T: ?Sized + Serialize
   {
     debug!("SerializeMap: serialize_key");
-    let hint = key.serialize(&mut **self)?;
-    debug!("SerializeMap: serialize_key, hint: {:?}", hint);
-    Ok(())
+    unimplemented!();
   }
 
   fn serialize_value<T>(&mut self, value: &T) -> Result<()>
     where T: ?Sized + Serialize
   {
     debug!("SerializeMap: serialize_value");
-    let hint = value.serialize(&mut **self)?;
-    debug!("SerializeMap: serialize_value, hint: {:?}", hint);
-    Ok(())
+    unimplemented!();
   }
 
   fn end(self) -> Result<Self::Ok> {