diff --git a/ChangeLog.md b/ChangeLog.md
index 9a13a8f..3fe9f77 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,8 +1,8 @@
 # Complexitty ChangeLog
 
-## Unreleased
+## v1.0.0
 
-**Released: WiP**
+**Released: 2025-10-03**
 
 - Migrated from `rye` to `uv` for development management.
   ([#25](https://github.com/davep/complexitty/pull/25))
diff --git a/pyproject.toml b/pyproject.toml
index a0a06bc..e3dce3f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "complexitty"
-version = "0.3.0"
+version = "1.0.0"
 description = "A simple Mandelbrot Set explorer for the terminal"
 authors = [
     { name = "Dave Pearson", email = "davep@davep.org" }
@@ -24,7 +24,7 @@ keywords = [
 ]
 classifiers = [
     "Environment :: Console",
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Education",
     "Intended Audience :: End Users/Desktop",
     "Intended Audience :: Science/Research",
diff --git a/uv.lock b/uv.lock
index 5eee68c..59ea4c8 100644
--- a/uv.lock
+++ b/uv.lock
@@ -278,7 +278,7 @@ wheels = [
 
 [[package]]
 name = "complexitty"
-version = "0.3.0"
+version = "1.0.0"
 source = { editable = "." }
 dependencies = [
     { name = "textual" },