diff --git a/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/pom.xml b/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/pom.xml
index 5269cf2..74fffa2 100644
--- a/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/pom.xml	
+++ b/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/pom.xml	
@@ -26,7 +26,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<vaadin.version>8.4.4</vaadin.version>
+		<vaadin.version>8.12.3</vaadin.version>
 		<axon.version>3.2</axon.version>
 	</properties>
 
diff --git a/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-command/pom.xml b/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-command/pom.xml
index 64b1340..9eee0dc 100644
--- a/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-command/pom.xml	
+++ b/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-command/pom.xml	
@@ -17,7 +17,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<vaadin.version>8.4.4</vaadin.version>
+		<vaadin.version>8.12.3</vaadin.version>
 		<axon.version>3.3.3</axon.version>
 		<spring-cloud.version>Edgware.SR4</spring-cloud.version>
 		<project.root>${basedir}/../</project.root>
diff --git a/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-query/pom.xml b/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-query/pom.xml
index 8ab0c43..3f7cc36 100644
--- a/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-query/pom.xml	
+++ b/Event Sourcing  CQRS Axon Framework/sample-axon-kafka/sample-axon-query/pom.xml	
@@ -16,7 +16,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<vaadin.version>8.2.0</vaadin.version>
+		<vaadin.version>8.12.3</vaadin.version>
 		<axon.version>3.3.3</axon.version>
 		<spring-cloud.version>Edgware.SR4</spring-cloud.version>
 		<project.root>${basedir}/../</project.root>