diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..5706fae
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,17 @@
+# Contributing
+
+## Making changes
+
+1. Fork the repository.
+2. Make changes.
+3. Add tests in `test/`.
+4. Run tests with `pnpm test`.
+
+## Release changes
+
+1. Merge PRs into dev branch.
+2. Merge dev branch into main branch with `git checkout main && git merge dev`
+3. Push main branch to remote with `git push`
+4. GitHub action will create a release and publish it to npm.
+
+Feel free to improve this process by creating an issue or PR.