diff --git a/apfloat/Cargo.toml b/apfloat/Cargo.toml
index 81cb329..d435c01 100644
--- a/apfloat/Cargo.toml
+++ b/apfloat/Cargo.toml
@@ -31,8 +31,3 @@ getrandom = { version = "0.2", features = ["js"], optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
 wasm-bindgen-test = "0.3"
-
-[target.'cfg(target_arch = "wasm32")'.features]
-default = ["std"]
-alloc = ["amplify_num/alloc"]
-std = ["amplify_num/std"]
diff --git a/num/Cargo.toml b/num/Cargo.toml
index cfb12b5..19fe6c3 100644
--- a/num/Cargo.toml
+++ b/num/Cargo.toml
@@ -40,11 +40,3 @@ getrandom = { version = "0.2", features = ["js"], optional = true }
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
 wasm-bindgen-test = "0.3"
-
-[target.'cfg(target_arch = "wasm32")'.features]
-default = ["hex"]
-all = ["std", "hex", "serde"]
-std = []
-serde = ["std", "serde_crate", "hex"]
-hex = []
-alloc = []