diff --git a/src/error_macros.rs b/src/error_macros.rs
index ecc7d73..00669ce 100644
--- a/src/error_macros.rs
+++ b/src/error_macros.rs
@@ -22,8 +22,8 @@ macro_rules! handle_syn_result {
             Ok(value) => value,
             Err(e) => {
                 let mut ts = quote! {
-                    impl #$generics_intro syn::parse::Parse for #$ident #$generics_args #$where_clause {
-                        fn parse(input: syn::parse::ParseStream) -> syn::Result<Self> {
+                    impl #$generics_intro ::syn::parse::Parse for #$ident #$generics_args #$where_clause {
+                        fn parse(input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                             unimplemented!("failed to derive `Parse`")
                         }
                     }
diff --git a/src/fields.rs b/src/fields.rs
index 9886569..a362518 100644
--- a/src/fields.rs
+++ b/src/fields.rs
@@ -312,7 +312,7 @@ fn handle_field_attrs(field_name: &Ident, ty_span: Span, attrs: FieldAttrs) -> P
 
             let macro_name = tree_kind.macro_name();
             let tree_name = tree_name(field_name);
-            parse_expr = quote_spanned! { span=> syn::#macro_name!(#tree_name in #input_source) };
+            parse_expr = quote_spanned! { span=> ::syn::#macro_name!(#tree_name in #input_source) };
         }
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index 8d2c35d..1bddc9b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -387,8 +387,8 @@ pub(crate) fn derive_parse_internal(input: DeriveInput) -> TokenStream {
 
     let parse_input = parse_input();
     quote!(
-        impl #generics_intro syn::parse::Parse for #ident #generics_args #where_clause {
-            fn parse(#parse_input: syn::parse::ParseStream) -> syn::Result<Self> {
+        impl #generics_intro ::syn::parse::Parse for #ident #generics_args #where_clause {
+            fn parse(#parse_input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                 #parse_impl
             }
         }
@@ -417,12 +417,12 @@ fn require_impl_parse_if_type(param: &syn::GenericParam) -> Result<TokenStream>
     let parse_bound = if colon_token.is_some() {
         quote_spanned! {
             ident.span()=>
-            + syn::parse::Parse
+            + ::syn::parse::Parse
         }
     } else {
         quote_spanned! {
             ident.span()=>
-            : syn::parse::Parse
+            : ::syn::parse::Parse
         }
     };
 
diff --git a/src/tests.rs b/src/tests.rs
index b932a13..9c5d55c 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -34,8 +34,8 @@ test_all! {
             bar: Bar,
             baz: Baz,
         }",
-        "impl syn::parse::Parse for Foo {
-            fn parse(__parse_input: syn::parse::ParseStream) -> syn::Result<Self> {
+        "impl ::syn::parse::Parse for Foo {
+            fn parse(__parse_input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                 let bar = __parse_input.parse()?;
                 let baz = __parse_input.parse()?;
 
@@ -54,10 +54,10 @@ test_all! {
             baz: Baz,
             quacker: Q,
         }",
-        "impl<B: syn::parse::Parse, Q: Quack + syn::parse::Parse> syn::parse::Parse for Foo<B, Q>
+        "impl<B: ::syn::parse::Parse, Q: Quack + ::syn::parse::Parse> ::syn::parse::Parse for Foo<B, Q>
         where <B as Bar>::Qux: Quack,
         {
-            fn parse(__parse_input: syn::parse::ParseStream) -> syn::Result<Self> {
+            fn parse(__parse_input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                 let bar = __parse_input.parse()?;
                 let baz = __parse_input.parse()?;
                 let quacker = __parse_input.parse()?;
@@ -78,12 +78,12 @@ test_all! {
             #[inside(paren)]
             baz: Baz,
         }",
-        "impl syn::parse::Parse for Foo {
-            fn parse(__parse_input: syn::parse::ParseStream) -> syn::Result<Self> {
+        "impl ::syn::parse::Parse for Foo {
+            fn parse(__parse_input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                 let bar = __parse_input.parse()?;
 
                 let __paren_backing_token_stream;
-                let paren = syn::parenthesized!(__paren_backing_token_stream in __parse_input);
+                let paren = ::syn::parenthesized!(__paren_backing_token_stream in __parse_input);
                 let baz = __paren_backing_token_stream.parse()?;
 
                 Ok(Foo {
@@ -105,15 +105,15 @@ test_all! {
             #[inside(snd)]
             baz: Baz,
         }",
-        "impl syn::parse::Parse for Foo {
-            fn parse(__parse_input: syn::parse::ParseStream) -> syn::Result<Self> {
+        "impl ::syn::parse::Parse for Foo {
+            fn parse(__parse_input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                 let bar = __parse_input.parse()?;
 
                 let __fst_backing_token_stream;
-                let fst = syn::bracketed!(__fst_backing_token_stream in __parse_input);
+                let fst = ::syn::bracketed!(__fst_backing_token_stream in __parse_input);
 
                 let __snd_backing_token_stream;
-                let snd = syn::braced!(__snd_backing_token_stream in __fst_backing_token_stream);
+                let snd = ::syn::braced!(__snd_backing_token_stream in __fst_backing_token_stream);
 
                 let baz = __snd_backing_token_stream.parse()?;
 
@@ -132,8 +132,8 @@ test_all! {
             #[peek_with(|p| !p.is_empty())]
             baz: Baz,
         }",
-        "impl syn::parse::Parse for Foo {
-            fn parse(__parse_input: syn::parse::ParseStream) -> syn::Result<Self> {
+        "impl ::syn::parse::Parse for Foo {
+            fn parse(__parse_input: ::syn::parse::ParseStream) -> ::syn::Result<Self> {
                 let bar = __parse_input.parse()?;
                 
                 let baz = match (|p| !p.is_empty())(__parse_input) {