diff --git a/Cargo.toml b/Cargo.toml
index 43a381a..2338a32 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,6 @@ proc-macro = true
 path = "./lib.rs"
 
 [dependencies]
+proc-macro2 = "1.0.89"
 quote = "1.0"
 syn = { version = "2.0", features = ["full"] }
-proc-macro2 = "*"