diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75ae388..35cb438 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+## 0.12.4
+
+### New
+
+- `:did-remount` is now `:will-remount`, the name matches semantics closely
+- Added support for soft-deprecated lifecycle methods prefixed with `UNSAFE`: `:unsafe/will-mount` and `:unsafe/will-update`
+- Added a wrapper for React's `useLayoutEffect` hook: `use-layout-effect!`
+- Added Reagent-like `:>` syntax for interop with React components
+
+### Fixes
+
+- Fixed `fragment` macro not supporting optional attributes
+- Fixed crashing in projects using Rum w/o ClojureScript dependency 
+
 ## 0.12.3
 
 ### Fixes
diff --git a/README.md b/README.md
index b3aba97..a254fb8 100644
--- a/README.md
+++ b/README.md
@@ -81,7 +81,7 @@ Rum:
 
 ## Using Rum
 
-Add to project.clj: `[rum "0.12.3"]`
+Add to project.clj: `[rum "0.12.4"]`
 
 ### API Docs & Articles
 
@@ -642,7 +642,7 @@ There are Rum wrappers for the various React hooks. See doc strings for examples
 
 When used from cljs Rum delegates serizliation to ReactDOM library. If used from clj/cljc, Rum works as a traditional template engine à la Hiccup:
 
-1.  Rum’s `project.clj` dependency becomes `[rum "0.12.3" :exclusions [cljsjs/react cljsjs/react-dom]`
+1.  Rum’s `project.clj` dependency becomes `[rum "0.12.4" :exclusions [cljsjs/react cljsjs/react-dom]`
 2.  Import `rum.core` as usual.
 3.  Define components using `rum/defc` or other macros as usual.
 4.  Instead of mounting, call `rum/render-html` to render into a string.
diff --git a/project.clj b/project.clj
index 3ef8db8..8760e16 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject rum "0.12.3"
+(defproject rum "0.12.4"
   :description "ClojureScript wrapper for React"
   :license {:name "Eclipse"
             :url "http://www.eclipse.org/legal/epl-v10.html"}