diff --git a/Cargo.toml b/Cargo.toml
index f628ecd..6ff18e5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,7 +40,7 @@ futures = { version = "0.3", optional = true }
 bytes = { version = "1", optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dependencies]
-web-sys = { version = "0.3", features = ["Document", "Window", "Storage", "Element", "HtmlElement", "DomTokenList", "MediaQueryList", "HtmlImageElement", "MouseEvent", "KeyboardEvent", "Node", "EventTarget", "Navigator"] }
+web-sys = { version = "0.3", features = ["Document", "Window", "Storage", "Element", "HtmlElement", "DomTokenList", "MediaQueryList", "HtmlImageElement", "MouseEvent", "KeyboardEvent", "Node", "EventTarget", "Navigator", "File", "FormData", "Request", "RequestInit", "Response", "Headers"] }
 wasm-bindgen = "0.2"
 wasm-bindgen-futures = "0.4"
 js-sys = "0.3"