diff --git a/Cargo.toml b/Cargo.toml
index 52fe115..6d10a8f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ proc-macro = true
 
 [dependencies]
 lazy_static = "1.4.0"
-proc-macro2 = "1.0.66"
+proc-macro2 = "1.0.78"
 quote = "1.0.33"
 syn = { version = "2.0.38", features = ["full", "extra-traits"] }
 thiserror = "1.0.49"