diff --git a/jpa/java8/pom.xml b/jpa/java8/pom.xml
index fe152d02..0bfab8d7 100644
--- a/jpa/java8/pom.xml
+++ b/jpa/java8/pom.xml
@@ -9,7 +9,6 @@
 	</parent>
 
 	<properties>
-		<spring.version>4.2.0.BUILD-SNAPSHOT</spring.version>
 		<spring-data-releasetrain.version>Gosling-BUILD-SNAPSHOT</spring-data-releasetrain.version>
 	</properties>
 
diff --git a/jpa/java8/src/main/java/example/springdata/jpa/java8/AbstractEntity.java b/jpa/java8/src/main/java/example/springdata/jpa/java8/AbstractEntity.java
index 7b7ea75f..c4091f7f 100644
--- a/jpa/java8/src/main/java/example/springdata/jpa/java8/AbstractEntity.java
+++ b/jpa/java8/src/main/java/example/springdata/jpa/java8/AbstractEntity.java
@@ -28,7 +28,7 @@ import org.springframework.data.annotation.LastModifiedDate;
  * @author Oliver Gierke
  */
 @MappedSuperclass
-public class AbstractEntity {
+public abstract class AbstractEntity {
 
 	@Id @GeneratedValue Long id;
 
diff --git a/pom.xml b/pom.xml
index 766c4760..c9a290a1 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>1.3.0.M1</version>
+		<version>1.3.0.M2</version>
 	</parent>
 
 	<modules>
diff --git a/rest/starbucks/pom.xml b/rest/starbucks/pom.xml
index 21b7168a..c712341e 100644
--- a/rest/starbucks/pom.xml
+++ b/rest/starbucks/pom.xml
@@ -13,7 +13,6 @@
 	</parent>
 
 	<properties>
-		<spring.version>4.2.0.RC1</spring.version>
 		<spring-hateoas.version>0.18.0.BUILD-SNAPSHOT</spring-hateoas.version>
 	</properties>