diff --git a/serde_codegen/Cargo.toml b/serde_codegen/Cargo.toml
index 5dafe866..cefc2e01 100644
--- a/serde_codegen/Cargo.toml
+++ b/serde_codegen/Cargo.toml
@@ -22,8 +22,8 @@ with-syn = []
 
 [dependencies]
 clippy = { version = "^0.*", optional = true }
-quote = "0.2"
+quote = "0.3"
 serde_codegen_internals = { version = "=0.9.0", default-features = false, path = "../serde_codegen_internals" }
-syn = { version = "0.8", features = ["aster", "visit"] }
+syn = { version = "0.9", features = ["aster", "visit"] }
 syntex = { version = "^0.44.0", optional = true }
 syntex_syntax = { version = "^0.44.0", optional = true }
diff --git a/serde_codegen/src/de.rs b/serde_codegen/src/de.rs
index db266458..173b68f6 100644
--- a/serde_codegen/src/de.rs
+++ b/serde_codegen/src/de.rs
@@ -185,17 +185,17 @@ fn deserialize_visitor(generics: &syn::Generics) -> (Tokens, Tokens, Tokens) {
         let ty_param_idents = if ty_param_idents.is_empty() {
             None
         } else {
-            Some(quote!(::<#(ty_param_idents),*>))
+            Some(quote!(::<#(#ty_param_idents),*>))
         };
 
         let phantom_exprs = iter::repeat(quote!(::std::marker::PhantomData)).take(num_phantoms);
 
         (
             quote! {
-                struct __Visitor #generics ( #(phantom_types),* ) #where_clause;
+                struct __Visitor #generics ( #(#phantom_types),* ) #where_clause;
             },
-            quote!(__Visitor <#(all_params),*> ),
-            quote!(__Visitor #ty_param_idents ( #(phantom_exprs),* )),
+            quote!(__Visitor <#(#all_params),*> ),
+            quote!(__Visitor #ty_param_idents ( #(#phantom_exprs),* )),
         )
     }
 }
@@ -358,17 +358,17 @@ fn deserialize_seq(
                 quote!(#ident: #value)
             });
         quote! {
-            #type_path { #(args),* }
+            #type_path { #(#args),* }
         }
     } else {
         let args = (0..fields.len()).map(|i| aster::id(format!("__field{}", i)));
         quote! {
-            #type_path ( #(args),* )
+            #type_path ( #(#args),* )
         }
     };
 
     quote! {
-        #(let_values)*
+        #(#let_values)*
 
         try!(visitor.end());
 
@@ -505,7 +505,7 @@ fn deserialize_item_enum(
     let variant_names = variants.iter().map(|variant| variant.ident.to_string());
 
     let variants_stmt = quote! {
-        const VARIANTS: &'static [&'static str] = &[ #(variant_names),* ];
+        const VARIANTS: &'static [&'static str] = &[ #(#variant_names),* ];
     };
 
     let ignored_arm = if item_attrs.deny_unknown_fields() {
@@ -551,7 +551,7 @@ fn deserialize_item_enum(
                 where __V: _serde::de::VariantVisitor,
             {
                 match try!(visitor.visit_variant()) {
-                    #(variant_arms)*
+                    #(#variant_arms)*
                 }
             }
         }
@@ -678,7 +678,7 @@ fn deserialize_field_visitor(
 
     let index_body = quote! {
         match value {
-            #(index_field_arms)*
+            #(#index_field_arms)*
             _ => #fallthrough_index_arm_expr
         }
     };
@@ -704,7 +704,7 @@ fn deserialize_field_visitor(
 
     let str_body = quote! {
         match value {
-            #(str_field_arms)*
+            #(#str_field_arms)*
             _ => #fallthrough_str_arm_expr
         }
     };
@@ -732,7 +732,7 @@ fn deserialize_field_visitor(
 
     let bytes_body = quote! {
         match value {
-            #(bytes_field_arms)*
+            #(#bytes_field_arms)*
             _ => #fallthrough_bytes_arm_expr
         }
     };
@@ -740,7 +740,7 @@ fn deserialize_field_visitor(
     quote! {
         #[allow(non_camel_case_types)]
         enum __Field {
-            #(field_idents,)*
+            #(#field_idents,)*
             #ignore_variant
         }
 
@@ -809,7 +809,7 @@ fn deserialize_struct_visitor(
     });
 
     let fields_stmt = quote! {
-        const FIELDS: &'static [&'static str] = &[ #(field_names),* ];
+        const FIELDS: &'static [&'static str] = &[ #(#field_names),* ];
     };
 
     (field_visitor, fields_stmt, visit_map)
@@ -922,21 +922,21 @@ fn deserialize_map(
         });
 
     quote! {
-        #(let_values)*
+        #(#let_values)*
 
         while let Some(key) = try!(visitor.visit_key::<__Field>()) {
             match key {
-                #(value_arms)*
-                #(skipped_arms)*
+                #(#value_arms)*
+                #(#skipped_arms)*
                 #ignored_arm
             }
         }
 
         try!(visitor.end());
 
-        #(extract_values)*
+        #(#extract_values)*
 
-        Ok(#struct_path { #(result),* })
+        Ok(#struct_path { #(#result),* })
     }
 }
 
diff --git a/serde_codegen/src/lib.rs b/serde_codegen/src/lib.rs
index 9656016d..42e3a0c7 100644
--- a/serde_codegen/src/lib.rs
+++ b/serde_codegen/src/lib.rs
@@ -201,7 +201,7 @@ pub fn expand_single_item(item: &str) -> Result<String, String> {
         let mut de = false;
         let item = syn::MacroInput {
             attrs: item.attrs.into_iter().flat_map(|attr| {
-                if attr.is_sugared_doc {
+                if attr.is_sugared_doc || attr.style != syn::AttrStyle::Outer {
                     return Some(attr);
                 }
                 let (name, nested) = match attr.value {
@@ -210,6 +210,7 @@ pub fn expand_single_item(item: &str) -> Result<String, String> {
                 };
                 if name != "derive" {
                     return Some(syn::Attribute {
+                        style: syn::AttrStyle::Outer,
                         value: syn::MetaItem::List(name, nested),
                         is_sugared_doc: false,
                     });
@@ -231,6 +232,7 @@ pub fn expand_single_item(item: &str) -> Result<String, String> {
                     None
                 } else {
                     Some(syn::Attribute {
+                        style: syn::AttrStyle::Outer,
                         value: syn::MetaItem::List(name, rest),
                         is_sugared_doc: false,
                     })
diff --git a/serde_codegen/src/ser.rs b/serde_codegen/src/ser.rs
index 0bbcd7e9..449a2490 100644
--- a/serde_codegen/src/ser.rs
+++ b/serde_codegen/src/ser.rs
@@ -168,7 +168,7 @@ fn serialize_tuple_struct(
 
     quote! {
         let #let_mut __serde_state = try!(_serializer.serialize_tuple_struct(#type_name, #len));
-        #(serialize_stmts)*
+        #(#serialize_stmts)*
         _serializer.serialize_tuple_struct_end(__serde_state)
     }
 }
@@ -209,7 +209,7 @@ fn serialize_struct(
 
     quote! {
         let #let_mut __serde_state = try!(_serializer.serialize_struct(#type_name, #len));
-        #(serialize_fields)*
+        #(#serialize_fields)*
         _serializer.serialize_struct_end(__serde_state)
     }
 }
@@ -238,7 +238,7 @@ fn serialize_item_enum(
 
     quote! {
         match *self {
-            #(arms)*
+            #(#arms)*
         }
     }
 }
@@ -290,7 +290,7 @@ fn serialize_variant(
                 })
                 .collect();
 
-            let pat = quote!(#type_ident::#variant_ident(#(field_names),*));
+            let pat = quote!(#type_ident::#variant_ident(#(#field_names),*));
 
             let block = serialize_tuple_variant(
                 type_name,
@@ -313,7 +313,7 @@ fn serialize_variant(
                 };
                 quote!(ref #id)
             });
-            let pat = quote!(#type_ident::#variant_ident { #(fields),* });
+            let pat = quote!(#type_ident::#variant_ident { #(#fields),* });
 
             let block = serialize_struct_variant(
                 variant_index,
@@ -381,7 +381,7 @@ fn serialize_tuple_variant(
             #variant_index,
             #variant_name,
             #len));
-        #(serialize_stmts)*
+        #(#serialize_stmts)*
         _serializer.serialize_tuple_variant_end(__serde_state)
     }
 }
@@ -428,7 +428,7 @@ fn serialize_struct_variant(
             #variant_name,
             #len,
         ));
-        #(serialize_fields)*
+        #(#serialize_fields)*
         _serializer.serialize_struct_variant_end(__serde_state)
     }
 }
diff --git a/serde_codegen_internals/Cargo.toml b/serde_codegen_internals/Cargo.toml
index 5213aeaf..fc4788ac 100644
--- a/serde_codegen_internals/Cargo.toml
+++ b/serde_codegen_internals/Cargo.toml
@@ -15,4 +15,4 @@ unstable-testing = ["clippy"]
 
 [dependencies]
 clippy = { version = "^0.*", optional = true }
-syn = "0.8"
+syn = "0.9"