diff --git a/pom.xml b/pom.xml
index a8db6f144..6968fa654 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,7 +16,7 @@
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
 		<!-- Spring -->
-		<spring-framework.version>4.1.1.RELEASE</spring-framework.version>
+		<spring-framework.version>4.1.4.RELEASE</spring-framework.version>
 		<spring-data-jpa.version>1.7.1.RELEASE</spring-data-jpa.version>
 
 
@@ -27,14 +27,14 @@
 		<jaxb-impl.version>2.2.7</jaxb-impl.version>
 
 		<!-- Hibernate / JPA -->
-		<hibernate.version>4.3.6.Final</hibernate.version>
+		<hibernate.version>4.3.8.Final</hibernate.version>
 
 		<!-- Bean validation -->
 		<hibernate-validator.version>4.3.1.Final</hibernate-validator.version>
 
 		<!-- Database access -->
 		<tomcat-jdbc.version>7.0.42</tomcat-jdbc.version>
-		<ehcache.version>2.6.9</ehcache.version>
+		<ehcache.version>2.6.10</ehcache.version>
 		<hsqldb.version>2.3.2</hsqldb.version>
 
 		<!-- AOP -->
@@ -42,19 +42,19 @@
 
 		<!-- Logging -->
 		<logback.version>1.1.2</logback.version>
-		<slf4j.version>1.7.7</slf4j.version>
+		<slf4j.version>1.7.10</slf4j.version>
 
 		<!-- RSS -->
 		<rome.version>1.5.0</rome.version>
 
 		<!-- Test -->
-		<junit.version>4.11</junit.version>
+		<junit.version>4.12</junit.version>
 		<hamcrest.version>1.3</hamcrest.version>
 
 		<!-- Dates -->
 		<jodatime-hibernate.version>1.3</jodatime-hibernate.version>
 		<jodatime-jsptags.version>1.1.1</jodatime-jsptags.version>
-		<jodatime.version>2.5</jodatime.version>
+		<jodatime.version>2.7</jodatime.version>
 		<jadira-usertype-core.version>3.2.0.GA</jadira-usertype-core.version>
 
 
diff --git a/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java b/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java
index b76bf6f33..8dfbfe90b 100644
--- a/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java
+++ b/src/main/java/org/springframework/samples/petclinic/model/BaseEntity.java
@@ -15,8 +15,6 @@
  */
 package org.springframework.samples.petclinic.model;
 
-import java.io.Serializable;
-
 import javax.persistence.GeneratedValue;
 import javax.persistence.GenerationType;
 import javax.persistence.Id;
diff --git a/src/test/java/org/springframework/samples/petclinic/model/ValidatorTests.java b/src/test/java/org/springframework/samples/petclinic/model/ValidatorTests.java
index 0b8c7a7df..566eb3a3e 100644
--- a/src/test/java/org/springframework/samples/petclinic/model/ValidatorTests.java
+++ b/src/test/java/org/springframework/samples/petclinic/model/ValidatorTests.java
@@ -6,14 +6,9 @@ import java.util.Set;
 import javax.validation.ConstraintViolation;
 import javax.validation.Validator;
 
-
 import org.junit.Assert;
 import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.i18n.LocaleContextHolder;
-import org.springframework.test.context.ContextConfiguration;
-import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 import org.springframework.validation.beanvalidation.LocalValidatorFactoryBean;
 
 /**
diff --git a/src/test/java/org/springframework/samples/petclinic/service/AbstractClinicServiceTests.java b/src/test/java/org/springframework/samples/petclinic/service/AbstractClinicServiceTests.java
index d9dc34955..bcef69fd4 100644
--- a/src/test/java/org/springframework/samples/petclinic/service/AbstractClinicServiceTests.java
+++ b/src/test/java/org/springframework/samples/petclinic/service/AbstractClinicServiceTests.java
@@ -23,7 +23,6 @@ import static org.junit.Assert.assertTrue;
 import java.util.Collection;
 
 import org.joda.time.DateTime;
-import org.junit.Assert;
 import org.junit.Test;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.samples.petclinic.model.Owner;