diff --git a/test_suite/Cargo.toml b/test_suite/Cargo.toml
index 064d4595..be836d67 100644
--- a/test_suite/Cargo.toml
+++ b/test_suite/Cargo.toml
@@ -13,7 +13,6 @@ serde = { path = "../serde" }
 
 [dev-dependencies]
 fnv = "1.0"
-rustc-serialize = "0.3.16"
 rustversion = "0.1"
 serde = { path = "../serde", features = ["rc", "derive"] }
 serde_derive = { path = "../serde_derive", features = ["deserialize_in_place"] }