diff --git a/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs b/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs
index f13d0326d0..092209dfc3 100644
--- a/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs
+++ b/tests/Microsoft.Bot.Builder.Tests/Teams/TeamsActivityHandlerTests.cs
@@ -1270,6 +1270,80 @@ void CaptureSend(Activity[] arg)
             Assert.Equal("10101010", activitiesToSend[0].Text);
         }
 
+        [Fact]
+        public async Task TestMeetingParticipantsAddedEvent()
+        {
+            // Arrange
+            var activity = new Activity
+            {
+                ChannelId = Channels.Msteams,
+                Type = ActivityTypes.Event,
+                Name = "application/vnd.microsoft.meetingParticipantsAdded",
+                Value = JObject.Parse(@"{
+                    ParticipantsAdded: [
+                        {Id: 'id', Name: 'name'}
+                    ]
+                }"),
+            };
+
+            Activity[] activitiesToSend = null;
+            void CaptureSend(Activity[] arg)
+            {
+                activitiesToSend = arg;
+            }
+
+            var turnContext = new TurnContext(new SimpleAdapter(CaptureSend), activity);
+
+            // Act
+            var bot = new TestActivityHandler();
+            await ((IBot)bot).OnTurnAsync(turnContext);
+
+            // Assert
+            Assert.Equal(2, bot.Record.Count);
+            Assert.Equal("OnEventActivityAsync", bot.Record[0]);
+            Assert.Equal("OnTeamsMeetingParticipantsAddedAsync", bot.Record[1]);
+            Assert.NotNull(activitiesToSend);
+            Assert.Single(activitiesToSend);
+            Assert.Equal("id", activitiesToSend[0].Text);
+        }
+
+        [Fact]
+        public async Task TestMeetingParticipantsRemovedEvent()
+        {
+            // Arrange
+            var activity = new Activity
+            {
+                ChannelId = Channels.Msteams,
+                Type = ActivityTypes.Event,
+                Name = "application/vnd.microsoft.meetingParticipantsRemoved",
+                Value = JObject.Parse(@"{
+                    ParticipantsRemoved: [
+                        {Id: 'id', Name: 'name'}
+                    ]
+                }"),
+            };
+
+            Activity[] activitiesToSend = null;
+            void CaptureSend(Activity[] arg)
+            {
+                activitiesToSend = arg;
+            }
+
+            var turnContext = new TurnContext(new SimpleAdapter(CaptureSend), activity);
+
+            // Act
+            var bot = new TestActivityHandler();
+            await ((IBot)bot).OnTurnAsync(turnContext);
+
+            // Assert
+            Assert.Equal(2, bot.Record.Count);
+            Assert.Equal("OnEventActivityAsync", bot.Record[0]);
+            Assert.Equal("OnTeamsMeetingParticipantsRemovedAsync", bot.Record[1]);
+            Assert.NotNull(activitiesToSend);
+            Assert.Single(activitiesToSend);
+            Assert.Equal("id", activitiesToSend[0].Text);
+        }
+
         [Fact]
         public async Task TestMessageUpdateActivityTeamsMessageEdit()
         {
@@ -1536,6 +1610,20 @@ protected override Task OnTeamsReadReceiptAsync(ReadReceiptInfo readReceiptInfo,
                 return Task.CompletedTask;
             }
 
+            protected override Task OnTeamsMeetingParticipantsAddedAsync(MeetingParticipantsAddedEventDetails meeting, ITurnContext<IEventActivity> turnContext, CancellationToken cancellationToken)
+            {
+                Record.Add(MethodBase.GetCurrentMethod().Name);
+                turnContext.SendActivityAsync(meeting.ParticipantsAdded[0].Id);
+                return base.OnTeamsMeetingParticipantsAddedAsync(meeting, turnContext, cancellationToken);
+            }
+
+            protected override Task OnTeamsMeetingParticipantsRemovedAsync(MeetingParticipantsRemovedEventDetails meeting, ITurnContext<IEventActivity> turnContext, CancellationToken cancellationToken)
+            {
+                Record.Add(MethodBase.GetCurrentMethod().Name);
+                turnContext.SendActivityAsync(meeting.ParticipantsRemoved[0].Id);
+                return base.OnTeamsMeetingParticipantsRemovedAsync(meeting, turnContext, cancellationToken);
+            }
+
             // Invoke
             protected override Task<InvokeResponse> OnInvokeActivityAsync(ITurnContext<IInvokeActivity> turnContext, CancellationToken cancellationToken)
             {
diff --git a/tests/Microsoft.Bot.Schema.Tests/Teams/MeetingParticipantsAddedEventDetailsTests.cs b/tests/Microsoft.Bot.Schema.Tests/Teams/MeetingParticipantsAddedEventDetailsTests.cs
new file mode 100644
index 0000000000..9063f78116
--- /dev/null
+++ b/tests/Microsoft.Bot.Schema.Tests/Teams/MeetingParticipantsAddedEventDetailsTests.cs
@@ -0,0 +1,48 @@
+// Copyright(c) Microsoft Corporation.All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using System.Collections.Generic;
+using Microsoft.Bot.Schema.Teams;
+using Xunit;
+
+namespace Microsoft.Bot.Schema.Tests.Teams
+{
+    public class MeetingParticipantsAddedEventDetailsTests
+    {
+        [Fact]
+        public void MeetingParticipantsAddedEventDetailsInits()
+        {
+            // Arrange
+            var meetingId = "meetingId";
+            var meetingJoinUrl = new Uri("http://meetingJoinUrl");
+            var meetingTitle = "meetingTitle";
+            var meetingType = "meetingType";
+            var participant = new TeamsChannelAccount("id", "name", "givenName", "surname", "email", "userPrincipalName");
+            var participantsAdded = new List<TeamsChannelAccount>() { participant };
+
+            // Act
+            var meeting = new MeetingParticipantsAddedEventDetails(meetingId, meetingJoinUrl, meetingTitle, meetingType, participantsAdded);
+
+            // Assert
+            Assert.NotNull(meeting);
+            Assert.IsType<MeetingParticipantsAddedEventDetails>(meeting);
+            Assert.Equal(meetingId, meeting.Id);
+            Assert.Equal(meetingJoinUrl, meeting.JoinUrl);
+            Assert.Equal(meetingTitle, meeting.Title);
+            Assert.Equal(meetingType, meeting.MeetingType);
+            Assert.StrictEqual(participantsAdded, meeting.ParticipantsAdded);
+        }
+
+        [Fact]
+        public void MeetingParticipantsAddedEventDetailsInitsWithNoArgs()
+        {
+            // Act
+            var meeting = new MeetingParticipantsAddedEventDetails();
+
+            // Assert
+            Assert.NotNull(meeting);
+            Assert.IsType<MeetingParticipantsAddedEventDetails>(meeting);
+        }
+    }
+}
diff --git a/tests/Microsoft.Bot.Schema.Tests/Teams/MeetingParticipantsRemovedEventDetailsTests.cs b/tests/Microsoft.Bot.Schema.Tests/Teams/MeetingParticipantsRemovedEventDetailsTests.cs
new file mode 100644
index 0000000000..b5234b4305
--- /dev/null
+++ b/tests/Microsoft.Bot.Schema.Tests/Teams/MeetingParticipantsRemovedEventDetailsTests.cs
@@ -0,0 +1,48 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+using System;
+using System.Collections.Generic;
+using Microsoft.Bot.Schema.Teams;
+using Xunit;
+
+namespace Microsoft.Bot.Schema.Tests.Teams
+{
+    public class MeetingParticipantsRemovedEventDetailsTests
+    {
+        [Fact]
+        public void MeetingParticipantsRemovedEventDetailsInits()
+        {
+            // Arrange
+            var meetingId = "meetingId";
+            var meetingJoinUrl = new Uri("http://meetingJoinUrl");
+            var meetingTitle = "meetingTitle";
+            var meetingType = "meetingType";
+            var participant = new TeamsChannelAccount("id", "name", "givenName", "surname", "email", "userPrincipalName");
+            var participantsRemoved = new List<TeamsChannelAccount>() { participant };
+
+            // Act
+            var meeting = new MeetingParticipantsRemovedEventDetails(meetingId, meetingJoinUrl, meetingTitle, meetingType, participantsRemoved);
+
+            // Assert
+            Assert.NotNull(meeting);
+            Assert.IsType<MeetingParticipantsRemovedEventDetails>(meeting);
+            Assert.Equal(meetingId, meeting.Id);
+            Assert.Equal(meetingJoinUrl, meeting.JoinUrl);
+            Assert.Equal(meetingTitle, meeting.Title);
+            Assert.Equal(meetingType, meeting.MeetingType);
+            Assert.StrictEqual(participantsRemoved, meeting.ParticipantsRemoved);
+        }
+
+        [Fact]
+        public void MeetingParticipantsRemovedEventDetailsInitsWithNoArgs()
+        {
+            // Act
+            var meeting = new MeetingParticipantsRemovedEventDetails();
+
+            // Assert
+            Assert.NotNull(meeting);
+            Assert.IsType<MeetingParticipantsRemovedEventDetails>(meeting);
+        }
+    }
+}