diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,16 @@
   </summary>
 </details>
 
+## 16.12.0 (November 14, 2019)
+
+### React DOM
+
+* Fix passive effects (`useEffect`) not being fired in a multi-root app. [@acdlite](https://github.com/acdlite) in [#17347](https://github.com/facebook/react/pull/17347)
+
+### React IS
+
+* Fix `lazy` and `memo` types considered elements instead of components [@bvaughn](https://github.com/bvaughn) in [#17278](https://github.com/facebook/react/pull/17278)
+
 ## 16.11.0 (October 22, 2019)
 
 ### React DOM