diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..3fb98e1
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,16 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.1.1](https://github.com/pluto/custom-constraints/compare/v0.1.0...v0.1.1) - 2025-02-10
+
+### Added
+- circuits + CCS ([#2](https://github.com/pluto/custom-constraints/pull/2))
+
+### Other
+- setup dev env
+- Initial commit
diff --git a/Cargo.lock b/Cargo.lock
index 9fdc800..b6da5e8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -155,7 +155,7 @@ dependencies = [
 
 [[package]]
 name = "custom-constraints"
-version = "0.1.0"
+version = "0.1.1"
 dependencies = [
  "ark-ff",
  "ark-std",
diff --git a/Cargo.toml b/Cargo.toml
index 4adc85e..2ede0f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -7,7 +7,7 @@ license     = "MIT"
 name        = "custom-constraints"
 readme      = "README.md"
 repository  = "https://github.com/autoparallel/custom-constraints"
-version     = "0.1.0"
+version     = "0.1.1"
 
 [dependencies]
 ark-ff = { version = "0.5", default-features = false, features = [