diff --git a/english/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml b/english/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
index aa076ac4..ed9e917a 100644
--- a/english/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
+++ b/english/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
@@ -7,5 +7,5 @@ edition = "2021"
 proc-macro = true
 
 [dependencies]
-syn = "1.0"
+syn = "2.0"
 quote = "1.0"
diff --git a/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
index 168cbae5..cf203115 100644
--- a/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
+++ b/listings/ch19-advanced-features/listing-19-31/hello_macro/hello_macro_derive/Cargo.toml
@@ -8,5 +8,5 @@ edition = "2018"
 proc-macro = true
 
 [dependencies]
-syn = "1.0"
+syn = "2.0"
 quote = "1.0"