diff --git a/Cargo.toml b/Cargo.toml
index 4ddc56b..574ce59 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rand04_compat"
 description = "Wrappers for compatibility with rand 0.4."
-version = "0.1.0"
+version = "0.1.1"
 license = "MIT/Apache-2.0"
 repository = "https://github.com/poanetwork/rand04_compat"
 readme = "README.md"
diff --git a/rand04/Cargo.toml b/rand04/Cargo.toml
index 64fcaee..769771c 100644
--- a/rand04/Cargo.toml
+++ b/rand04/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "rand04"
 description = "Re-export of rand 0.4, so it can be used together with a later version of rand."
-version = "0.1.0"
+version = "0.1.1"
 license = "MIT/Apache-2.0"
 repository = "https://github.com/poanetwork/rand04_compat"
 readme = "README.md"
diff --git a/rand04/src/lib.rs b/rand04/src/lib.rs
index 775e5e6..5f0be6d 100644
--- a/rand04/src/lib.rs
+++ b/rand04/src/lib.rs
@@ -3,4 +3,6 @@
 //! This can be used instead of the deprecated [rand](https://crates.io/crates/rand) 0.4 in crates
 //! that for reasons of compatibility need to depend on both a current version and 0.4.
 
+#![no_std]
+
 pub use rand::*;
diff --git a/src/lib.rs b/src/lib.rs
index a971edf..5ce3f83 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,8 @@
 //! # Wrappers for compatibility with rand 0.4
 
-use std::marker::PhantomData;
+#![no_std]
+
+use core::marker::PhantomData;
 
 use rand::Rng;
 pub use rand04;