diff --git a/Cargo.lock b/Cargo.lock
index 5276e224..970c1c02 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -68,7 +68,7 @@ version = "0.1.0"
 
 [[package]]
 name = "cpubits"
-version = "0.1.0-pre.3"
+version = "0.1.0-pre.4"
 
 [[package]]
 name = "cpufeatures"
diff --git a/cpubits/Cargo.toml b/cpubits/Cargo.toml
index 4be71a3a..295d5b56 100644
--- a/cpubits/Cargo.toml
+++ b/cpubits/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cpubits"
-version = "0.1.0-pre.3"
+version = "0.1.0-pre.4"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
 documentation = "https://docs.rs/cpubits"