diff --git a/CHANGELOG.md b/CHANGELOG.md
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+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## [0.1.0](https://github.com/pkgjs/parseargs/compare/v0.1.0...v0.1.0) (2022-01-22)
+
+
+### Features
+
+* expand scenarios covered by default arguments for environments ([#20](https://github.com/pkgjs/parseargs/issues/20)) ([582ada7](https://github.com/pkgjs/parseargs/commit/582ada7be0eca3a73d6e0bd016e7ace43449fa4c))
+* update readme and include contributing guidelines ([8edd6fc](https://github.com/pkgjs/parseargs/commit/8edd6fc863cd705f6fac732724159ebe8065a2b0))
+
+
+### Bug Fixes
+
+* do not strip excess leading dashes on long option names ([#21](https://github.com/pkgjs/parseargs/issues/21)) ([f848590](https://github.com/pkgjs/parseargs/commit/f848590ebf3249ed5979ff47e003fa6e1a8ec5c0))
+* name & readme ([3f057c1](https://github.com/pkgjs/parseargs/commit/3f057c1b158a1bdbe878c64b57460c58e56e465f))
+* package.json values ([9bac300](https://github.com/pkgjs/parseargs/commit/9bac300e00cd76c77076bf9e75e44f8929512da9))
+* update readme name ([957d8d9](https://github.com/pkgjs/parseargs/commit/957d8d96e1dcb48297c0a14345d44c0123b2883e))
+
+
+### Build System
+
+* first release as minor ([421c6e2](https://github.com/pkgjs/parseargs/commit/421c6e2569a8668ad14fac5a5af5be60479a7571))
+
 ## 0.1.0 (2022-01-22)