diff --git a/CHANGELOG.md b/CHANGELOG.md
index 64404df..005ce69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+-
+
+## 1.15.0
+
 - Increase minimal supported Rust version to 1.56.0.
 - Implement `UnwindSafe` even if the `std` feature is disabled.
 
diff --git a/Cargo.toml b/Cargo.toml
index 8a56aab..892053e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "once_cell"
-version = "1.14.0"
+version = "1.15.0-pre.1"
 authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
 license = "MIT OR Apache-2.0"
 edition = "2021"