diff --git a/Cargo.lock b/Cargo.lock
index 60d6a9e..0a3d442 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1782,7 +1782,10 @@ dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "odds 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio 0.1.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "tokio 0.2.0-alpha.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-codec 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tokio-io 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
  "warp 0.1.20 (registry+https://github.com/rust-lang/crates.io-index)",
  "weak-table 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 9813c70..4e2d63d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,7 +16,10 @@ hyper = "^0.12.35"
 hyper13 = { package = "hyper", version="0.13.0-alpha.4", features = ["unstable-stream"] }
 log = "^0.4.8"
 matches = "^0.1.8"
-odds = { version = "^0.3.1", features = ["std-vec"] }
+odds = { version = "0.3.1", features = ["std-vec"] }
+tokio = "0.1.22"
 tokio2 = { package = "tokio", version="0.2.0-alpha.6" }
+tokio-codec = "0.1.1"
+tokio-io = "0.1.12"
 warp = "0.1.20"
 weak-table = "^0.2.3"