diff --git a/crates/webidl/Cargo.toml b/crates/webidl/Cargo.toml
index b4c79bc7..75a04c3b 100644
--- a/crates/webidl/Cargo.toml
+++ b/crates/webidl/Cargo.toml
@@ -20,4 +20,4 @@ proc-macro2 = "0.4.8"
 quote = '0.6'
 syn = { version = '0.15', features = ['full'] }
 wasm-bindgen-backend = { version = "=0.2.44", path = "../backend" }
-weedle = "0.8"
+weedle = "0.9"
diff --git a/crates/webidl/src/idl_type.rs b/crates/webidl/src/idl_type.rs
index cd6877af..b6b39eb1 100644
--- a/crates/webidl/src/idl_type.rs
+++ b/crates/webidl/src/idl_type.rs
@@ -300,6 +300,12 @@ impl<'a> ToIdlType<'a> for AttributedType<'a> {
     }
 }
 
+impl<'a> ToIdlType<'a> for AttributedNonAnyType<'a> {
+    fn to_idl_type(&self, record: &FirstPassRecord<'a>) -> IdlType<'a> {
+        self.type_.to_idl_type(record)
+    }
+}
+
 impl<'a> ToIdlType<'a> for Identifier<'a> {
     fn to_idl_type(&self, record: &FirstPassRecord<'a>) -> IdlType<'a> {
         if self.0 == "DOMTimeStamp" {