diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c7ef45..475b0dc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# Version 4.5.0
+
+- Add a `portable-atomic` feature that enables the usage of fallback primitives for CPUs without atomics. (#58)
+
 # Version 4.4.1
 
 - Clarify safety documentation for `spawn_unchecked`. (#49)
diff --git a/Cargo.toml b/Cargo.toml
index a62ce44..9a8ee61 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name = "async-task"
 # When publishing a new version:
 # - Update CHANGELOG.md
 # - Create "v4.x.y" git tag
-version = "4.4.1"
+version = "4.5.0"
 authors = ["Stjepan Glavina <stjepang@gmail.com>"]
 edition = "2018"
 rust-version = "1.47"