diff --git a/src/addons/ReactAddonsDOMDependencies.js b/src/addons/ReactAddonsDOMDependencies.js
index e0b5eb45a5e42..327cfbf700d0d 100644
--- a/src/addons/ReactAddonsDOMDependencies.js
+++ b/src/addons/ReactAddonsDOMDependencies.js
@@ -12,16 +12,11 @@
 'use strict';
 
 var ReactDOM = require('ReactDOM');
-var ReactInstanceMap = require('ReactInstanceMap');
 
 exports.getReactDOM = function() {
   return ReactDOM;
 };
 
-exports.getReactInstanceMap = function() {
-  return ReactInstanceMap;
-};
-
 if (__DEV__) {
   var ReactPerf = require('ReactPerf');
   var ReactTestUtils = require('ReactTestUtils');
diff --git a/src/addons/transitions/ReactTransitionGroup.js b/src/addons/transitions/ReactTransitionGroup.js
index 001b06fb9d0e0..62372801fa3fd 100644
--- a/src/addons/transitions/ReactTransitionGroup.js
+++ b/src/addons/transitions/ReactTransitionGroup.js
@@ -12,7 +12,6 @@
 'use strict';
 
 var React = require('React');
-var ReactAddonsDOMDependencies = require('ReactAddonsDOMDependencies');
 var ReactTransitionChildMapping = require('ReactTransitionChildMapping');
 
 var emptyFunction = require('emptyFunction');
@@ -56,17 +55,9 @@ class ReactTransitionGroup extends React.Component {
   }
 
   componentWillReceiveProps(nextProps) {
-    var nextChildMapping;
-    if (__DEV__) {
-      nextChildMapping = ReactTransitionChildMapping.getChildMapping(
-        nextProps.children,
-        ReactAddonsDOMDependencies.getReactInstanceMap().get(this)._debugID
-      );
-    } else {
-      nextChildMapping = ReactTransitionChildMapping.getChildMapping(
-        nextProps.children
-      );
-    }
+    var nextChildMapping = ReactTransitionChildMapping.getChildMapping(
+      nextProps.children
+    );
     var prevChildMapping = this.state.children;
 
     this.setState({
@@ -129,17 +120,9 @@ class ReactTransitionGroup extends React.Component {
 
     delete this.currentlyTransitioningKeys[key];
 
-    var currentChildMapping;
-    if (__DEV__) {
-      currentChildMapping = ReactTransitionChildMapping.getChildMapping(
-        this.props.children,
-        ReactAddonsDOMDependencies.getReactInstanceMap().get(this)._debugID
-      );
-    } else {
-      currentChildMapping = ReactTransitionChildMapping.getChildMapping(
-        this.props.children
-      );
-    }
+    var currentChildMapping = ReactTransitionChildMapping.getChildMapping(
+      this.props.children
+    );
 
     if (!currentChildMapping || !currentChildMapping.hasOwnProperty(key)) {
       // This was removed before it had fully appeared. Remove it.
@@ -169,17 +152,9 @@ class ReactTransitionGroup extends React.Component {
 
     delete this.currentlyTransitioningKeys[key];
 
-    var currentChildMapping;
-    if (__DEV__) {
-      currentChildMapping = ReactTransitionChildMapping.getChildMapping(
-        this.props.children,
-        ReactAddonsDOMDependencies.getReactInstanceMap().get(this)._debugID
-      );
-    } else {
-      currentChildMapping = ReactTransitionChildMapping.getChildMapping(
-        this.props.children
-      );
-    }
+    var currentChildMapping = ReactTransitionChildMapping.getChildMapping(
+      this.props.children
+    );
 
     if (!currentChildMapping || !currentChildMapping.hasOwnProperty(key)) {
       // This was removed before it had fully entered. Remove it.
@@ -210,17 +185,9 @@ class ReactTransitionGroup extends React.Component {
 
     delete this.currentlyTransitioningKeys[key];
 
-    var currentChildMapping;
-    if (__DEV__) {
-      currentChildMapping = ReactTransitionChildMapping.getChildMapping(
-        this.props.children,
-        ReactAddonsDOMDependencies.getReactInstanceMap().get(this)._debugID
-      );
-    } else {
-      currentChildMapping = ReactTransitionChildMapping.getChildMapping(
-        this.props.children
-      );
-    }
+    var currentChildMapping = ReactTransitionChildMapping.getChildMapping(
+      this.props.children
+    );
 
     if (currentChildMapping && currentChildMapping.hasOwnProperty(key)) {
       // This entered again before it fully left. Add it again.
diff --git a/src/umd/ReactDOMUMDEntry.js b/src/umd/ReactDOMUMDEntry.js
index 59daf4bef9c61..03a0318a10503 100644
--- a/src/umd/ReactDOMUMDEntry.js
+++ b/src/umd/ReactDOMUMDEntry.js
@@ -11,24 +11,24 @@
 
 'use strict';
 
+var React = require('React');
 var ReactDOM = require('ReactDOM');
 
-var ReactDOMUMDEntry = Object.assign({
-  __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: {
-    ReactInstanceMap: require('ReactInstanceMap'),
-  },
-}, ReactDOM);
+var ReactDOMUMDEntry = ReactDOM;
 
 if (__DEV__) {
-  Object.assign(
-    ReactDOMUMDEntry.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED,
-    {
-      // ReactPerf and ReactTestUtils currently only work with the DOM renderer
-      // so we expose them from here, but only in DEV mode.
-      ReactPerf: require('ReactPerf'),
-      ReactTestUtils: require('ReactTestUtils'),
-    }
-  );
+  ReactDOMUMDEntry.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = {
+    // ReactPerf and ReactTestUtils currently only work with the DOM renderer
+    // so we expose them from here, but only in DEV mode.
+    ReactPerf: require('ReactPerf'),
+    ReactTestUtils: require('ReactTestUtils'),
+  };
+}
+
+// Inject ReactDOM into React for the addons UMD build that depends on ReactDOM (TransitionGroup).
+// We can remove this after we deprecate and remove the addons UMD build.
+if (React.addons) {
+  React.__SECRET_INJECTED_REACT_DOM_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = ReactDOMUMDEntry;
 }
 
 module.exports = ReactDOMUMDEntry;
diff --git a/src/umd/ReactWithAddonsUMDEntry.js b/src/umd/ReactWithAddonsUMDEntry.js
index ad05b565c932e..c59e62e731ea9 100644
--- a/src/umd/ReactWithAddonsUMDEntry.js
+++ b/src/umd/ReactWithAddonsUMDEntry.js
@@ -15,6 +15,7 @@ var ReactWithAddons = require('ReactWithAddons');
 
 // `version` will be added here by the React module.
 var ReactWithAddonsUMDEntry = Object.assign({
+  __SECRET_INJECTED_REACT_DOM_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: null, // Will be injected by ReactDOM UMD build.
   __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED: {
     ReactCurrentOwner: require('ReactCurrentOwner'),
   },
diff --git a/src/umd/shims/ReactAddonsDOMDependenciesUMDShim.js b/src/umd/shims/ReactAddonsDOMDependenciesUMDShim.js
index 2aa7b886b544b..e725c048008c0 100644
--- a/src/umd/shims/ReactAddonsDOMDependenciesUMDShim.js
+++ b/src/umd/shims/ReactAddonsDOMDependenciesUMDShim.js
@@ -9,16 +9,12 @@
  * @providesModule ReactAddonsDOMDependenciesUMDShim
  */
 
-/* globals ReactDOM */
-
 'use strict';
 
 exports.getReactDOM = function() {
-  return ReactDOM;
-};
-
-exports.getReactInstanceMap = function() {
-  return ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactInstanceMap;
+  var ReactWithAddonsUMDEntry = require('ReactWithAddonsUMDEntry');
+  // This is injected by the ReactDOM UMD build:
+  return ReactWithAddonsUMDEntry.__SECRET_INJECTED_REACT_DOM_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
 };
 
 if (__DEV__) {