diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..3daae26
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,23 @@
+# Changelog
+
+## 0.1.0 (2025-11-23)
+
+
+### ⚠ BREAKING CHANGES
+
+* Database struct replaced with CatalogBuilder, changes public API
+* **schema:** Public API completely restructured - SchemaBuilder removed, all type names changed, and parse_sql method signature modified
+* `parse` and `parse_from_settings` methods now take `&mut self` instead of `self` and return `Result<(), _>` instead of `Result<Self, _>`. This changes the API from a builder pattern to an in-place mutation pattern.
+
+### Features
+
+* add database constraints support and restructure schema parsing ([692b509](https://github.com/sqlc-plugins/sqlc-gen-core/commit/692b509ba0c62178970c4353bcf815ee9079f513))
+* add runtime module for sqlc.dev plugin execution ([9d11ac6](https://github.com/sqlc-plugins/sqlc-gen-core/commit/9d11ac60d83f1ec9c7a532a6b86008a898ce37d5))
+* add SQL schema parsing and constraint extraction ([9e70009](https://github.com/sqlc-plugins/sqlc-gen-core/commit/9e70009bd0448ff02490f8ca6e6fc2a6d5a6badc))
+* initial Rust crate for building sqlc plugins ([8f35804](https://github.com/sqlc-plugins/sqlc-gen-core/commit/8f358040c376933727d023f626af4a54ab748df4))
+
+
+### Code Refactoring
+
+* change SchemaDef parse methods to use mutable references ([299093e](https://github.com/sqlc-plugins/sqlc-gen-core/commit/299093e484399750c6a97a0704c8a55274d456e8))
+* **schema:** restructure API from builder pattern to database-centric design ([456835a](https://github.com/sqlc-plugins/sqlc-gen-core/commit/456835ad6cc9e7ab9a479cf0410ec3d6a79bbb56))
diff --git a/Cargo.lock b/Cargo.lock
index d24b57a..159d7e1 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -358,7 +358,7 @@ checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
 [[package]]
 name = "sqlc-gen-core"
-version = "0.0.0"
+version = "0.1.0"
 dependencies = [
  "prost",
  "prost-build",
diff --git a/Cargo.toml b/Cargo.toml
index 3b68fee..fae6b75 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sqlc-gen-core"
-version = "0.0.0"
+version = "0.1.0"
 edition = "2021"
 publish = false
 description = "A crate for building sqlc plugins"