FromStr has not been released
diff --git a/README.md b/README.md
index c7650f7..6273b44 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@
let source = input.to_string();
// Parse the string representation into a syntax tree
- let ast: syn::DeriveInput = source.parse().unwrap();
+ let ast = syn::parse_derive_input(&source).unwrap();
// Build the output, possibly using quasi-quotation
let expanded = quote! {
@@ -81,7 +81,7 @@
let source = input.to_string();
// Parse the string representation into a syntax tree
- let ast: syn::DeriveInput = source.parse().unwrap();
+ let ast = syn::parse_derive_input(&source).unwrap();
// Build the output
let expanded = expand_num_fields(&ast);