diff --git a/Cargo.toml b/Cargo.toml
index 0e26f27..2e9ca93 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ log = "0.4.17"
 paste = "1.0.10"
 serialport = "4.2.0"
 clap = { version = "4.0.32", features = ["derive"] }
-proc-macro2 = { version = "=1.0.67", features=["default", "proc-macro"] }
+proc-macro2 = { version = "=1.0.89", features=["default", "proc-macro"] }
 signal-hook = "0.3.4"
 num_enum = "0.7.3"