diff --git a/CHANGELOG.md b/CHANGELOG.md
index f61785e2c8..7c2c7758ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Added
 
+-  Resolves [#2753](https://github.com/microsoft/BotFramework-WebChat/issues/2753). Added support for updating an activity by the ID, by [@compulim](https://github.com/compulim) in PR [#2825](https://github.com/microsoft/BotFramework-WebChat/pull/2825)
+
 ### Fixed
 
 -  Fixes [#2611](https://github.com/microsoft/BotFramework-WebChat/issues/2611). Fix sample 21: hooks errors, by [@corinagum](https://github.com/corinagum) in PR [#2740](https://github.com/microsoft/BotFramework-WebChat/pull/2740)
diff --git a/__tests__/__image_snapshots__/chrome-docker/update-activity-js-should-not-replace-activity-without-activity-id-1-snap.png b/__tests__/__image_snapshots__/chrome-docker/update-activity-js-should-not-replace-activity-without-activity-id-1-snap.png
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diff --git a/__tests__/__image_snapshots__/chrome-docker/update-activity-js-should-replace-activity-with-same-activity-id-1-snap.png b/__tests__/__image_snapshots__/chrome-docker/update-activity-js-should-replace-activity-with-same-activity-id-1-snap.png
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diff --git a/__tests__/__image_snapshots__/chrome-docker/update-activity-js-should-replace-activity-with-same-activity-id-2-snap.png b/__tests__/__image_snapshots__/chrome-docker/update-activity-js-should-replace-activity-with-same-activity-id-2-snap.png
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diff --git a/__tests__/updateActivity.js b/__tests__/updateActivity.js
new file mode 100644
index 0000000000..c0c511eac2
--- /dev/null
+++ b/__tests__/updateActivity.js
@@ -0,0 +1,91 @@
+import { imageSnapshotOptions, timeouts } from './constants.json';
+
+import allImagesLoaded from './setup/conditions/allImagesLoaded';
+import minNumActivitiesShown from './setup/conditions/minNumActivitiesShown';
+import scrollToBottomCompleted from './setup/conditions/scrollToBottomCompleted';
+import uiConnected from './setup/conditions/uiConnected';
+
+jest.setTimeout(timeouts.test);
+
+test('should replace activity with same activity ID', async () => {
+  const { driver, pageObjects } = await setupWebDriver({
+    createDirectLine: options => {
+      const workingDirectLine = window.WebChat.createDirectLine(options);
+      let firstBotActivityId;
+      let firstBotActivityTimestamp;
+
+      return {
+        activity$: workingDirectLine.activity$.map(activity => {
+          if (!activity.channelData && activity.type === 'message') {
+            // Duplicate the ID using the first message activity from bot.
+
+            if (firstBotActivityId) {
+              return Object.assign({}, activity, {
+                id: firstBotActivityId,
+                timestamp: firstBotActivityTimestamp
+              });
+            }
+
+            firstBotActivityId = activity.id;
+            firstBotActivityTimestamp = activity.timestamp;
+          }
+
+          return activity;
+        }),
+        connectionStatus$: workingDirectLine.connectionStatus$,
+        postActivity: workingDirectLine.postActivity.bind(workingDirectLine),
+        token: workingDirectLine.token
+      };
+    }
+  });
+
+  await driver.wait(uiConnected(), timeouts.directLine);
+  await pageObjects.sendMessageViaSendBox('echo This message will be replaced by a carousel.', { waitForSend: true });
+  await driver.wait(minNumActivitiesShown(2), timeouts.directLine);
+
+  await expect(driver.takeScreenshot()).resolves.toMatchImageSnapshot(imageSnapshotOptions);
+
+  await pageObjects.sendMessageViaSendBox('carousel', { waitForSend: true });
+  await driver.wait(minNumActivitiesShown(3), timeouts.directLine);
+  await driver.wait(allImagesLoaded(), timeouts.fetchImage);
+
+  await expect(driver.takeScreenshot()).resolves.toMatchImageSnapshot(imageSnapshotOptions);
+});
+
+test('should not replace activity without activity ID', async () => {
+  const { driver, pageObjects } = await setupWebDriver({
+    createDirectLine: options => {
+      const workingDirectLine = window.WebChat.createDirectLine(options);
+
+      return {
+        activity$: workingDirectLine.activity$.map(activity => {
+          if (!activity.channelData && activity.type === 'message') {
+            // Remove all activity ID from bot
+
+            return Object.assign({}, activity, { id: undefined });
+          }
+
+          return activity;
+        }),
+        connectionStatus$: workingDirectLine.connectionStatus$,
+        postActivity: workingDirectLine.postActivity.bind(workingDirectLine),
+        token: workingDirectLine.token
+      };
+    }
+  });
+
+  await driver.wait(uiConnected(), timeouts.directLine);
+  await pageObjects.sendMessageViaSendBox('echo This message will not be replaced by a carousel.', {
+    waitForSend: true
+  });
+  await driver.wait(minNumActivitiesShown(2), timeouts.directLine);
+
+  await expect(driver.takeScreenshot()).resolves.toMatchImageSnapshot(imageSnapshotOptions);
+
+  await pageObjects.sendMessageViaSendBox('carousel', { waitForSend: true });
+  await driver.wait(minNumActivitiesShown(3), timeouts.directLine);
+  await driver.wait(allImagesLoaded(), timeouts.fetchImage);
+  await driver.wait(scrollToBottomCompleted(), timeouts.scrollToBottom);
+
+  await expect(driver.takeScreenshot()).resolves.toMatchImageSnapshot(imageSnapshotOptions);
+});
diff --git a/packages/core/src/reducers/activities.js b/packages/core/src/reducers/activities.js
index 1d6f43f415..cce3206ec6 100644
--- a/packages/core/src/reducers/activities.js
+++ b/packages/core/src/reducers/activities.js
@@ -25,10 +25,10 @@ function upsertActivityWithSort(activities, nextActivity) {
 
   const nextTimestamp = Date.parse(nextActivity.timestamp);
   const nextActivities = activities.filter(
-    ({ channelData: { clientActivityID } = {} }) =>
-      // We will remove all "sending messages" activities
+    ({ channelData: { clientActivityID } = {}, id }) =>
+      // We will remove all "sending messages" activities and activities with same ID
       // "clientActivityID" is unique and used to track if the message has been sent and echoed back from the server
-      !(nextClientActivityID && clientActivityID === nextClientActivityID)
+      !(nextClientActivityID && clientActivityID === nextClientActivityID) && !(id && id === nextActivity.id)
   );
 
   // Then, find the right (sorted) place to insert the new activity at, based on timestamp
@@ -83,9 +83,8 @@ export default function activities(state = DEFAULT_STATE, { meta, payload, type
       break;
 
     case INCOMING_ACTIVITY:
-      // UpdateActivity is not supported right now because we ignore duplicated activity ID
       // TODO: [P4] Move "typing" into Constants.ActivityType
-      if (payload.activity.type !== 'typing' && !~state.findIndex(({ id }) => id === payload.activity.id)) {
+      if (payload.activity.type !== 'typing') {
         state = upsertActivityWithSort(state, payload.activity);
       }