diff --git a/README.md b/README.md
index 43463c550..f94e24d81 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ For more information jump to a section below.
 
  | Branch | Description | Build Status | Coverage Status |
  |--------|-------------|--------------|-----------------|
- |Main | Preview 7 Builds | [![Build Status](https://travis-ci.org/Microsoft/botbuilder-java.svg?branch=main)](https://travis-ci.org/Microsoft/botbuilder-java) | [![Coverage Status](https://coveralls.io/repos/github/microsoft/botbuilder-java/badge.svg?branch=823847c676b7dbb0fa348a308297ae375f5141ef)](https://coveralls.io/github/microsoft/botbuilder-java?branch=823847c676b7dbb0fa348a308297ae375f5141ef) |
+ |Main | Preview 8 Builds | [![Build Status](https://travis-ci.org/Microsoft/botbuilder-java.svg?branch=main)](https://travis-ci.org/Microsoft/botbuilder-java) | [![Coverage Status](https://coveralls.io/repos/github/microsoft/botbuilder-java/badge.svg?branch=823847c676b7dbb0fa348a308297ae375f5141ef)](https://coveralls.io/github/microsoft/botbuilder-java?branch=823847c676b7dbb0fa348a308297ae375f5141ef) |
 
 ## Getting Started
 To get started building bots using the SDK, see the [Azure Bot Service Documentation](https://docs.microsoft.com/en-us/azure/bot-service/?view=azure-bot-service-4.0).
diff --git a/libraries/bot-ai-luis-v3/pom.xml b/libraries/bot-ai-luis-v3/pom.xml
index b5e3da6da..7622682ee 100644
--- a/libraries/bot-ai-luis-v3/pom.xml
+++ b/libraries/bot-ai-luis-v3/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-ai-qna/pom.xml b/libraries/bot-ai-qna/pom.xml
index b18f1eeca..b2f1898c6 100644
--- a/libraries/bot-ai-qna/pom.xml
+++ b/libraries/bot-ai-qna/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-applicationinsights/pom.xml b/libraries/bot-applicationinsights/pom.xml
index 4670963d9..46b11893c 100644
--- a/libraries/bot-applicationinsights/pom.xml
+++ b/libraries/bot-applicationinsights/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-azure/pom.xml b/libraries/bot-azure/pom.xml
index 5be92b71a..d044b1ec6 100644
--- a/libraries/bot-azure/pom.xml
+++ b/libraries/bot-azure/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-builder/pom.xml b/libraries/bot-builder/pom.xml
index 01c9d2203..98a32ca89 100644
--- a/libraries/bot-builder/pom.xml
+++ b/libraries/bot-builder/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-connector/pom.xml b/libraries/bot-connector/pom.xml
index 56dab3981..d764843bf 100644
--- a/libraries/bot-connector/pom.xml
+++ b/libraries/bot-connector/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-dialogs/pom.xml b/libraries/bot-dialogs/pom.xml
index a2ef707a8..1958da61d 100644
--- a/libraries/bot-dialogs/pom.xml
+++ b/libraries/bot-dialogs/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-integration-core/pom.xml b/libraries/bot-integration-core/pom.xml
index 19bfc303a..e03286c6d 100644
--- a/libraries/bot-integration-core/pom.xml
+++ b/libraries/bot-integration-core/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-integration-spring/pom.xml b/libraries/bot-integration-spring/pom.xml
index e67c8abd2..96ec043d1 100644
--- a/libraries/bot-integration-spring/pom.xml
+++ b/libraries/bot-integration-spring/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/libraries/bot-schema/pom.xml b/libraries/bot-schema/pom.xml
index df4ea4baf..a4e7a7ccc 100644
--- a/libraries/bot-schema/pom.xml
+++ b/libraries/bot-schema/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>com.microsoft.bot</groupId>
     <artifactId>bot-java</artifactId>
-    <version>4.6.0-preview7</version>
+    <version>4.6.0-preview8</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index e4e33cb62..75b63485c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
   <groupId>com.microsoft.bot</groupId>
   <artifactId>bot-java</artifactId>
-  <version>4.6.0-preview7</version>
+  <version>4.6.0-preview8</version>
   <packaging>pom</packaging>
 
   <name>Microsoft BotBuilder Java SDK Parent</name>
diff --git a/samples/02.echo-bot/pom.xml b/samples/02.echo-bot/pom.xml
index af633db9a..8be1af926 100644
--- a/samples/02.echo-bot/pom.xml
+++ b/samples/02.echo-bot/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/03.welcome-user/pom.xml b/samples/03.welcome-user/pom.xml
index 603fb5474..a42260a83 100644
--- a/samples/03.welcome-user/pom.xml
+++ b/samples/03.welcome-user/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/08.suggested-actions/pom.xml b/samples/08.suggested-actions/pom.xml
index d377e9373..9e41dfe01 100644
--- a/samples/08.suggested-actions/pom.xml
+++ b/samples/08.suggested-actions/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/16.proactive-messages/pom.xml b/samples/16.proactive-messages/pom.xml
index 3c5b28039..9c187e338 100644
--- a/samples/16.proactive-messages/pom.xml
+++ b/samples/16.proactive-messages/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/45.state-management/pom.xml b/samples/45.state-management/pom.xml
index 28efd44f0..306206b77 100644
--- a/samples/45.state-management/pom.xml
+++ b/samples/45.state-management/pom.xml
@@ -78,7 +78,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/47.inspection/pom.xml b/samples/47.inspection/pom.xml
index bb7984ed6..0e5e9d588 100644
--- a/samples/47.inspection/pom.xml
+++ b/samples/47.inspection/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/50.teams-messaging-extensions-search/pom.xml b/samples/50.teams-messaging-extensions-search/pom.xml
index 4f005618c..b5c9fe9ae 100644
--- a/samples/50.teams-messaging-extensions-search/pom.xml
+++ b/samples/50.teams-messaging-extensions-search/pom.xml
@@ -84,7 +84,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
       <dependency>
diff --git a/samples/51.teams-messaging-extensions-action/pom.xml b/samples/51.teams-messaging-extensions-action/pom.xml
index f9897f033..8af7b6e7b 100644
--- a/samples/51.teams-messaging-extensions-action/pom.xml
+++ b/samples/51.teams-messaging-extensions-action/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/52.teams-messaging-extensions-search-auth-config/pom.xml b/samples/52.teams-messaging-extensions-search-auth-config/pom.xml
index a65524bff..ff0760822 100644
--- a/samples/52.teams-messaging-extensions-search-auth-config/pom.xml
+++ b/samples/52.teams-messaging-extensions-search-auth-config/pom.xml
@@ -84,7 +84,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
       <dependency>
diff --git a/samples/53.teams-messaging-extensions-action-preview/pom.xml b/samples/53.teams-messaging-extensions-action-preview/pom.xml
index 3a8689268..8fcc80646 100644
--- a/samples/53.teams-messaging-extensions-action-preview/pom.xml
+++ b/samples/53.teams-messaging-extensions-action-preview/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/54.teams-task-module/pom.xml b/samples/54.teams-task-module/pom.xml
index a78083366..68a119d90 100644
--- a/samples/54.teams-task-module/pom.xml
+++ b/samples/54.teams-task-module/pom.xml
@@ -77,7 +77,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
       <dependency>
diff --git a/samples/55.teams-link-unfurling/pom.xml b/samples/55.teams-link-unfurling/pom.xml
index 1bcd80db3..d266c7e7d 100644
--- a/samples/55.teams-link-unfurling/pom.xml
+++ b/samples/55.teams-link-unfurling/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/56.teams-file-upload/pom.xml b/samples/56.teams-file-upload/pom.xml
index 672a9c438..f576403c3 100644
--- a/samples/56.teams-file-upload/pom.xml
+++ b/samples/56.teams-file-upload/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/57.teams-conversation-bot/pom.xml b/samples/57.teams-conversation-bot/pom.xml
index 977337be0..8162a848c 100644
--- a/samples/57.teams-conversation-bot/pom.xml
+++ b/samples/57.teams-conversation-bot/pom.xml
@@ -79,7 +79,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
   </dependencies>
diff --git a/samples/58.teams-start-new-thread-in-channel/pom.xml b/samples/58.teams-start-new-thread-in-channel/pom.xml
index 0291c9e7c..12f410598 100644
--- a/samples/58.teams-start-new-thread-in-channel/pom.xml
+++ b/samples/58.teams-start-new-thread-in-channel/pom.xml
@@ -77,7 +77,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-spring</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
         <scope>compile</scope>
       </dependency>
       <dependency>
diff --git a/samples/servlet-echo/pom.xml b/samples/servlet-echo/pom.xml
index 62b06fc05..2bfd8a39c 100644
--- a/samples/servlet-echo/pom.xml
+++ b/samples/servlet-echo/pom.xml
@@ -89,7 +89,7 @@
       <dependency>
         <groupId>com.microsoft.bot</groupId>
         <artifactId>bot-integration-core</artifactId>
-        <version>4.6.0-preview7</version>
+        <version>4.6.0-preview8</version>
       </dependency>
   </dependencies>