diff --git a/libraries/bot-integration-spring/pom.xml b/libraries/bot-integration-spring/pom.xml
index 96ec043d1..fa11f01cc 100644
--- a/libraries/bot-integration-spring/pom.xml
+++ b/libraries/bot-integration-spring/pom.xml
@@ -56,28 +56,28 @@
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-web</artifactId>
-      <version>2.1.8.RELEASE</version>
+      <version>2.4.0</version>
     </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-test</artifactId>
-      <version>2.1.8.RELEASE</version>
+      <version>2.4.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-core</artifactId>
-      <version>5.1.9.RELEASE</version>
+      <version>5.3.1</version>
     </dependency>
     <dependency>
       <groupId>org.springframework</groupId>
       <artifactId>spring-beans</artifactId>
-      <version>5.1.9.RELEASE</version>
+      <version>5.3.1</version>
     </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot</artifactId>
-      <version>2.1.8.RELEASE</version>
+      <version>2.4.0</version>
       <scope>compile</scope>
     </dependency>
 
diff --git a/samples/02.echo-bot/pom.xml b/samples/02.echo-bot/pom.xml
index f9a1939bf..2cf05cccf 100644
--- a/samples/02.echo-bot/pom.xml
+++ b/samples/02.echo-bot/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
diff --git a/samples/03.welcome-user/pom.xml b/samples/03.welcome-user/pom.xml
index 0fb01da59..7f6fbb4a0 100644
--- a/samples/03.welcome-user/pom.xml
+++ b/samples/03.welcome-user/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -51,7 +51,7 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
-        <version>2.1.8.RELEASE</version>
+        <version>2.4.0</version>
         <scope>test</scope>
       </dependency>
       <dependency>
diff --git a/samples/08.suggested-actions/bin/pom.xml b/samples/08.suggested-actions/bin/pom.xml
index 9c779a336..6900cba5e 100644
--- a/samples/08.suggested-actions/bin/pom.xml
+++ b/samples/08.suggested-actions/bin/pom.xml
@@ -15,7 +15,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.1.7.RELEASE</version>
+    <version>2.4.0</version>
     <relativePath />
   </parent>
 
diff --git a/samples/08.suggested-actions/pom.xml b/samples/08.suggested-actions/pom.xml
index d1360ada3..0f73b9ba3 100644
--- a/samples/08.suggested-actions/pom.xml
+++ b/samples/08.suggested-actions/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -51,7 +51,7 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
-        <version>2.1.8.RELEASE</version>
+        <version>2.4.0</version>
         <scope>test</scope>
       </dependency>
       <dependency>
diff --git a/samples/16.proactive-messages/bin/pom.xml b/samples/16.proactive-messages/bin/pom.xml
index 9c779a336..6900cba5e 100644
--- a/samples/16.proactive-messages/bin/pom.xml
+++ b/samples/16.proactive-messages/bin/pom.xml
@@ -15,7 +15,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.1.7.RELEASE</version>
+    <version>2.4.0</version>
     <relativePath />
   </parent>
 
diff --git a/samples/16.proactive-messages/pom.xml b/samples/16.proactive-messages/pom.xml
index c598b6a91..c314a2710 100644
--- a/samples/16.proactive-messages/pom.xml
+++ b/samples/16.proactive-messages/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -51,7 +51,7 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
-        <version>2.1.8.RELEASE</version>
+        <version>2.4.0</version>
         <scope>test</scope>
       </dependency>
       <dependency>
diff --git a/samples/45.state-management/pom.xml b/samples/45.state-management/pom.xml
index 32c20d122..e1f3b0050 100644
--- a/samples/45.state-management/pom.xml
+++ b/samples/45.state-management/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -50,7 +50,7 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
-        <version>2.1.8.RELEASE</version>
+        <version>2.4.0</version>
         <scope>test</scope>
       </dependency>
       <dependency>
diff --git a/samples/47.inspection/pom.xml b/samples/47.inspection/pom.xml
index cc29f2371..043ce9008 100644
--- a/samples/47.inspection/pom.xml
+++ b/samples/47.inspection/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
-        <version>2.1.8.RELEASE</version>
+        <version>2.4.0</version>
         <scope>test</scope>
       </dependency>
 
diff --git a/samples/50.teams-messaging-extensions-search/pom.xml b/samples/50.teams-messaging-extensions-search/pom.xml
index b5c9fe9ae..6a02d2758 100644
--- a/samples/50.teams-messaging-extensions-search/pom.xml
+++ b/samples/50.teams-messaging-extensions-search/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
diff --git a/samples/51.teams-messaging-extensions-action/pom.xml b/samples/51.teams-messaging-extensions-action/pom.xml
index 8af7b6e7b..f392538a6 100644
--- a/samples/51.teams-messaging-extensions-action/pom.xml
+++ b/samples/51.teams-messaging-extensions-action/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
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 ff0760822..005b63303 100644
--- a/samples/52.teams-messaging-extensions-search-auth-config/pom.xml
+++ b/samples/52.teams-messaging-extensions-search-auth-config/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -62,7 +62,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
diff --git a/samples/53.teams-messaging-extensions-action-preview/pom.xml b/samples/53.teams-messaging-extensions-action-preview/pom.xml
index 8fcc80646..c83dcd358 100644
--- a/samples/53.teams-messaging-extensions-action-preview/pom.xml
+++ b/samples/53.teams-messaging-extensions-action-preview/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
diff --git a/samples/54.teams-task-module/pom.xml b/samples/54.teams-task-module/pom.xml
index 68a119d90..f58521655 100644
--- a/samples/54.teams-task-module/pom.xml
+++ b/samples/54.teams-task-module/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
       <dependency>
diff --git a/samples/55.teams-link-unfurling/pom.xml b/samples/55.teams-link-unfurling/pom.xml
index d266c7e7d..e2ed87974 100644
--- a/samples/55.teams-link-unfurling/pom.xml
+++ b/samples/55.teams-link-unfurling/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
diff --git a/samples/56.teams-file-upload/pom.xml b/samples/56.teams-file-upload/pom.xml
index f576403c3..07d2a7436 100644
--- a/samples/56.teams-file-upload/pom.xml
+++ b/samples/56.teams-file-upload/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
diff --git a/samples/57.teams-conversation-bot/pom.xml b/samples/57.teams-conversation-bot/pom.xml
index 8162a848c..4364d13e7 100644
--- a/samples/57.teams-conversation-bot/pom.xml
+++ b/samples/57.teams-conversation-bot/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
 
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 12f410598..d36164f28 100644
--- a/samples/58.teams-start-new-thread-in-channel/pom.xml
+++ b/samples/58.teams-start-new-thread-in-channel/pom.xml
@@ -17,7 +17,7 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.1.7.RELEASE</version>
+        <version>2.4.0</version>
         <relativePath/>
     </parent>
 
@@ -57,7 +57,7 @@
       <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-test</artifactId>
-          <version>2.1.8.RELEASE</version>
+          <version>2.4.0</version>
           <scope>test</scope>
       </dependency>
       <dependency>