diff --git a/example-service/Cargo.toml b/example-service/Cargo.toml
index 969756b..871f68b 100644
--- a/example-service/Cargo.toml
+++ b/example-service/Cargo.toml
@@ -17,7 +17,7 @@ tarpc-json-transport = { version = "0.1", path = "../json-transport" }
 clap = "2.0"
 futures-preview = { version = "0.3.0-alpha.17" }
 serde = { version = "1.0" }
-tarpc = { version = "0.18", path = "../tarpc" }
+tarpc = { version = "0.18", path = "../tarpc", features = ["serde1"] }
 tokio = "0.2.0-alpha.1"
 env_logger = "0.6"
 
diff --git a/tarpc/Cargo.toml b/tarpc/Cargo.toml
index 6324754..592728b 100644
--- a/tarpc/Cargo.toml
+++ b/tarpc/Cargo.toml
@@ -13,7 +13,7 @@ readme = "../README.md"
 description = "An RPC framework for Rust with a focus on ease of use."
 
 [features]
-default = ["serde1", "tokio1"]
+default = ["tokio1"]
 serde1 = ["rpc/serde1", "tarpc-plugins/serde1", "serde", "serde/derive"]
 tokio1 = ["rpc/tokio1"]