diff --git a/Cargo.lock b/Cargo.lock
index 1b5892e..4df18d5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -82,7 +82,7 @@ checksum = "6fe2267d4ed49bc07b63801559be28c718ea06c4738b7a03c94df7386d2cde46"
 
 [[package]]
 name = "hkdf"
-version = "0.13.0-pre"
+version = "0.13.0-pre.0"
 dependencies = [
  "blobby",
  "hex-literal",
diff --git a/hkdf/Cargo.toml b/hkdf/Cargo.toml
index c5db32b..ca9aab1 100644
--- a/hkdf/Cargo.toml
+++ b/hkdf/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "hkdf"
-version = "0.13.0-pre"
+version = "0.13.0-pre.0"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
 homepage = "https://github.com/RustCrypto/KDFs/"