diff --git a/Cargo.toml b/Cargo.toml
index 7c41121..e180d84 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ proc-macro2 = "1.0"
 quote = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 syn = { version = "2.0", features = ["default", "extra-traits"] }
-toml = "0.8"
+toml = "0.9"
 unicode-xid = "0.2"
 
 # Update-worthy.