diff --git a/src/test/java/org/springframework/samples/petclinic/hibernate/HibernateClinicTests.java b/src/test/java/org/springframework/samples/petclinic/hibernate/HibernateClinicTests.java
index 3c275c820b22c9d168063d1fc6aa8b28ffea8b00..4f50d723183a9131e3d5f191093e6e49fa78e8fe 100644
--- a/src/test/java/org/springframework/samples/petclinic/hibernate/HibernateClinicTests.java
+++ b/src/test/java/org/springframework/samples/petclinic/hibernate/HibernateClinicTests.java
@@ -1,6 +1,7 @@
 package org.springframework.samples.petclinic.hibernate;
 
 import org.springframework.samples.petclinic.AbstractClinicTests;
+import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.ContextConfiguration;
 
 /**
@@ -15,6 +16,7 @@ import org.springframework.test.context.ContextConfiguration;
  * @author Sam Brannen
  */
 @ContextConfiguration
+@DirtiesContext
 public class HibernateClinicTests extends AbstractClinicTests {
 
 }
diff --git a/src/test/java/org/springframework/samples/petclinic/jdbc/SimpleJdbcClinicTests.java b/src/test/java/org/springframework/samples/petclinic/jdbc/SimpleJdbcClinicTests.java
index 709100d1a12db583b5a3c9b5cb4afbbd8b3949a5..f44baeb12ae5a10c2d5c3538081dbe38ec2db95f 100644
--- a/src/test/java/org/springframework/samples/petclinic/jdbc/SimpleJdbcClinicTests.java
+++ b/src/test/java/org/springframework/samples/petclinic/jdbc/SimpleJdbcClinicTests.java
@@ -1,6 +1,7 @@
 package org.springframework.samples.petclinic.jdbc;
 
 import org.springframework.samples.petclinic.AbstractClinicTests;
+import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.ContextConfiguration;
 
 /**
@@ -14,6 +15,7 @@ import org.springframework.test.context.ContextConfiguration;
  * @author Thomas Risberg
  */
 @ContextConfiguration
+@DirtiesContext
 public class SimpleJdbcClinicTests extends AbstractClinicTests {
 
 }