diff --git a/Cargo.toml b/Cargo.toml
index 705ac77..94f8876 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,4 +10,4 @@ csv = "1.1.6"
 serde = { version = "1.0.145", features = ["derive"] }
 serde_repr = "0.1.9"
 extindex = "0.5.0"
-rust_decimal = "1.26.1"
+rust_decimal = { version = "1.26.1", features = ["serde-str"] }