diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0ce118cf..70f5e2de 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,21 @@
 
 ## Unreleased
 
+### Changed
+* Updated dependencies to their latest versions
+* Updated prettier to 1.9.2, introducing a change in function parens style (set to `arrowParens: 'always'`):
+
+    ```js
+    // Before
+    const foo = myArray.map(foo => {});
+
+    // After
+    const foo = myArray.map((foo) => {});
+    ```
+
+* Added a `prettier` script: `yarn prettier` now prettifies source files
+* Prettified source files using the new config
+
 ## [18.3.1] - 2017-12-21
 
 ### Changed