diff --git a/dbstruct-derive/Cargo.toml b/dbstruct-derive/Cargo.toml
index 67df742..f275c3b 100644
--- a/dbstruct-derive/Cargo.toml
+++ b/dbstruct-derive/Cargo.toml
@@ -18,7 +18,7 @@ exclude = [
 [dependencies]
 syn = { version = "2", features = ["full", "extra-traits"] }
 quote = "1"
-proc-macro2 = "1" 
+proc-macro2 = "1.0.81" 
 proc-macro-error = "1"
 thiserror = "1"
 itertools = "0.12"