diff --git a/Cargo.toml b/Cargo.toml
index ec59c90..ea4adb9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -22,6 +22,8 @@ maintenance = { status = "actively-developed" }
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [features]
 default = ["log", "rand"]
+wasm-bindgen = ["rand/wasm-bindgen"]
+stdweb = ["rand/stdweb"]
 
 [dependencies]
 log = { version = "0.4", optional = true }