diff --git a/Cargo.toml b/Cargo.toml
index 6b06a3a..87b2a95 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,7 +45,7 @@ tokio-core = "0.1.6"
 
 # An implementation of futures and streams featuring zero allocations, composability, and iterator-like interfaces.
 # https://docs.rs/futures/0.1.12/futures/
-futures = "0.1.12"
+futures = "0.3.5"
 
 # A lightweight logging facade for Rust
 # https://doc.rust-lang.org/log/log/index.html