diff --git a/Cargo.lock b/Cargo.lock
index c662ca56b3d..a0fcecef575 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4417,7 +4417,6 @@ dependencies = [
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.88 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 1.0.88 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "servo_config_plugins 0.0.1",
  "servo_geometry 0.0.1",
diff --git a/components/config/Cargo.toml b/components/config/Cargo.toml
index 274c4cc4492..24318089e01 100644
--- a/components/config/Cargo.toml
+++ b/components/config/Cargo.toml
@@ -20,8 +20,7 @@ getopts = "0.2.11"
 lazy_static = "1"
 log = "0.4"
 num_cpus = "1.1.0"
-serde = "1.0"
-serde_derive = "1.0"
+serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 servo_geometry = {path = "../geometry"}
 servo_url = {path = "../url"}
diff --git a/components/config/tests/prefs.rs b/components/config/tests/prefs.rs
index bcaa5f5bb0e..fd42bf7e047 100644
--- a/components/config/tests/prefs.rs
+++ b/components/config/tests/prefs.rs
@@ -3,7 +3,7 @@
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 #[macro_use]
-extern crate serde_derive;
+extern crate serde;
 
 use servo_config::basedir;
 use servo_config::pref_util::Preferences;