diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc29fca..22e6817 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## v1.0.0 - 2023-12-21
 
 - Rad now requires Gleam v0.33 or later.
 - The `else` label in `rad/task.{or}` has been renamed to `otherwise`.
diff --git a/gleam.toml b/gleam.toml
index 336e060..93637af 100644
--- a/gleam.toml
+++ b/gleam.toml
@@ -1,5 +1,5 @@
 name = "rad"
-version = "1.0.0-dev"
+version = "1.0.0"
 description = "A task runner for Gleam projects"
 licences = ["Apache-2.0"]
 target = "javascript"