diff --git a/bindings/wasm/Cargo.toml b/bindings/wasm/Cargo.toml
index b6ed9c2d83..e7f20ba89f 100644
--- a/bindings/wasm/Cargo.toml
+++ b/bindings/wasm/Cargo.toml
@@ -20,6 +20,7 @@ futures = { version = "0.3" }
 js-sys = { version = "0.3" }
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", default-features = false }
+tokio = { version = "*", default-features = false, features = ["rt"] } # enable "rt" feature to fix build: https://github.com/iotaledger/identity.rs/issues/403
 wasm-bindgen = { version = "0.2", features = ["serde-serialize"] }
 wasm-bindgen-futures = { version = "0.4", default-features = false }