diff --git a/samples/rest-notes-slate/build.gradle b/samples/rest-notes-slate/build.gradle
index c488bb3e..e25dd23b 100644
--- a/samples/rest-notes-slate/build.gradle
+++ b/samples/rest-notes-slate/build.gradle
@@ -3,7 +3,7 @@ buildscript {
 		maven { url 'https://repo.spring.io/milestone' }
 	}
 	dependencies {
-		classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.M1'
+		classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.M6'
 	}
 }
 
diff --git a/samples/rest-notes-spring-data-rest/pom.xml b/samples/rest-notes-spring-data-rest/pom.xml
index 6fe49288..7e2b8308 100644
--- a/samples/rest-notes-spring-data-rest/pom.xml
+++ b/samples/rest-notes-spring-data-rest/pom.xml
@@ -11,7 +11,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.0.0.M1</version>
+		<version>2.0.0.M6</version>
 		<relativePath />
 	</parent>
 
diff --git a/samples/rest-notes-spring-hateoas/build.gradle b/samples/rest-notes-spring-hateoas/build.gradle
index 68cc359d..5a4f206a 100644
--- a/samples/rest-notes-spring-hateoas/build.gradle
+++ b/samples/rest-notes-spring-hateoas/build.gradle
@@ -3,7 +3,7 @@ buildscript {
 		maven { url 'https://repo.spring.io/milestone' }
 	}
 	dependencies {
-		classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.M1'
+		classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.M6'
 	}
 }
 
diff --git a/samples/rest-notes-spring-hateoas/src/main/java/com/example/notes/ExceptionSupressingErrorAttributes.java b/samples/rest-notes-spring-hateoas/src/main/java/com/example/notes/ExceptionSupressingErrorAttributes.java
index bc05ff62..dbac5854 100644
--- a/samples/rest-notes-spring-hateoas/src/main/java/com/example/notes/ExceptionSupressingErrorAttributes.java
+++ b/samples/rest-notes-spring-hateoas/src/main/java/com/example/notes/ExceptionSupressingErrorAttributes.java
@@ -18,19 +18,20 @@ package com.example.notes;
 
 import java.util.Map;
 
-import org.springframework.boot.autoconfigure.web.servlet.error.DefaultErrorAttributes;
+import org.springframework.boot.web.servlet.error.DefaultErrorAttributes;
 import org.springframework.stereotype.Component;
 import org.springframework.web.context.request.RequestAttributes;
+import org.springframework.web.context.request.WebRequest;
 
 @Component
 class ExceptionSupressingErrorAttributes extends DefaultErrorAttributes {
 
 	@Override
-	public Map<String, Object> getErrorAttributes(RequestAttributes requestAttributes,
+	public Map<String, Object> getErrorAttributes(WebRequest webRequest,
 			boolean includeStackTrace) {
-		Map<String, Object> errorAttributes = super.getErrorAttributes(requestAttributes, includeStackTrace);
+		Map<String, Object> errorAttributes = super.getErrorAttributes(webRequest, includeStackTrace);
 		errorAttributes.remove("exception");
-		Object message = requestAttributes.getAttribute("javax.servlet.error.message", RequestAttributes.SCOPE_REQUEST);
+		Object message = webRequest.getAttribute("javax.servlet.error.message", RequestAttributes.SCOPE_REQUEST);
 		if (message != null) {
 			errorAttributes.put("message", message);
 		}
diff --git a/samples/testng/build.gradle b/samples/testng/build.gradle
index 1a61f1d8..7b654c5f 100644
--- a/samples/testng/build.gradle
+++ b/samples/testng/build.gradle
@@ -3,7 +3,7 @@ buildscript {
 		maven { url 'https://repo.spring.io/milestone' }
 	}
 	dependencies {
-		classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.M1'
+		classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.M6'
 	}
 }