diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..331c947
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,12 @@
+# Changelog
+
+## 0.1.0 (2026-02-27)
+
+
+### Features
+
+* add conventional commits workflow ([#11](https://github.com/drewolson-google/ucp-schema/issues/11)) ([ab1a15e](https://github.com/drewolson-google/ucp-schema/commit/ab1a15eb177bd633a83a55e705a2735534e091c3))
+* add GitHub Action to publish to crates.io on tag push ([#13](https://github.com/drewolson-google/ucp-schema/issues/13)) ([cc0ac77](https://github.com/drewolson-google/ucp-schema/commit/cc0ac779d05a3e78a858d484a450661307251f93))
+* expose compose > resolve > validate pipeline ([#10](https://github.com/drewolson-google/ucp-schema/issues/10)) ([f50e5e1](https://github.com/drewolson-google/ucp-schema/commit/f50e5e1bccb70e8935d9709831c1b4c6b1e7ecfe))
+* JSONRPC & REST request validation patterns ([#4](https://github.com/drewolson-google/ucp-schema/issues/4)) ([efd4968](https://github.com/drewolson-google/ucp-schema/commit/efd4968f6745efd14b3f0153b47262ccb61faa5a))
+* type conflict detection & extension visibility control ([#16](https://github.com/drewolson-google/ucp-schema/issues/16)) ([26b46b4](https://github.com/drewolson-google/ucp-schema/commit/26b46b4a3d4333d270100dc27abe20fc5f929d86))
diff --git a/Cargo.lock b/Cargo.lock
index 66e3682..4249b27 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1751,7 +1751,7 @@ checksum = "e421abadd41a4225275504ea4d6566923418b7f05506fbc9c0fe86ba7396114b"
 
 [[package]]
 name = "ucp-schema"
-version = "1.1.0"
+version = "0.1.0"
 dependencies = [
  "assert_cmd",
  "clap",
diff --git a/Cargo.toml b/Cargo.toml
index 5d4deaa..a5d5f81 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ucp-schema"
-version = "1.1.0"
+version = "0.1.0"
 edition = "2021"
 license = "Apache-2.0"
 description = "Runtime resolution of UCP schema annotations"