diff --git a/Cargo.toml b/Cargo.toml
index df7a799..e944aa6 100755
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ wasm-bindgen = "^0.2.50"
 
 # For serialization, eg sending requests to a server. Otherwise, not required.
 serde = { version = "^1.0.85", features = ['derive'] }
-futures = "^0.1.26"
+futures = "^0.3.4"
 
 
 [dev-dependencies]