diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..713609c
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,14 @@
+# Changelog
+
+## `2.1.0`
+
+:rocket: New features:
+
+  - Add `isRequest` for models (it was already in `Collection`).
+  - Add `primaryKey` so you can use a different key than `'id'`.
+
+:wrench: Tooling:
+
+  - Add `prettier-standard`
+  - Add flow linting
+  - Set test coverage
diff --git a/package.json b/package.json
index d9a33d7..cfba072 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mobx-rest",
-  "version": "2.0.4",
+  "version": "2.1.0",
   "description": "REST conventions for mobx.",
   "repository": {
     "type": "git",