diff --git a/Cargo.toml b/Cargo.toml
index 453d72e..b385b0d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -65,7 +65,7 @@ harness = false
 [features]
 default = ["std", "u64_backend"]
 std = ["curve25519-dalek/std", "rand_os", "sha2/std"]
-alloc = ["curve25519-dalek/alloc", "rand_os"]
+alloc = ["curve25519-dalek/alloc"]
 nightly = ["curve25519-dalek/nightly", "clear_on_drop/nightly"]
 batch = ["rand"]
 asm = ["sha2/asm"]
diff --git a/src/lib.rs b/src/lib.rs
index fcd52af..13784fb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -262,8 +262,6 @@ extern crate curve25519_dalek;
 extern crate failure;
 #[cfg(all(feature = "batch", any(feature = "std", feature = "alloc", test)))]
 extern crate rand;
-#[cfg(any(feature = "std", test))]
-extern crate rand_os;
 extern crate rand_core;
 #[cfg(feature = "serde")]
 extern crate serde;