diff --git a/Cargo.toml b/Cargo.toml
index ccc4f2f41..1e3f42928 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ path = "src/cargo/lib.rs"
 [dependencies]
 atty = "0.2"
 crates-io = { path = "src/crates-io", version = "0.18" }
-crossbeam = "0.3"
+crossbeam = "0.4"
 crypto-hash = "0.3.1"
 curl = "0.4.13"
 env_logger = "0.5.4"