diff --git a/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/pom.xml b/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/pom.xml
index e295c51..d1e9777 100644
--- a/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/pom.xml
+++ b/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/pom.xml
@@ -56,6 +56,10 @@
 			<artifactId>mysql-connector-java</artifactId>
 			<scope>runtime</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+		</dependency>
 	</dependencies>
 
 </project>
diff --git a/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/main/java/io/spring/billrun/configuration/BillingConfiguration.java b/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/main/java/io/spring/billrun/configuration/BillingConfiguration.java
index 5bd018f..c12ad47 100644
--- a/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/main/java/io/spring/billrun/configuration/BillingConfiguration.java
+++ b/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/main/java/io/spring/billrun/configuration/BillingConfiguration.java
@@ -49,8 +49,6 @@ import org.springframework.core.io.Resource;
 @EnableTask
 @EnableBatchProcessing
 public class BillingConfiguration {
-	private static final Log logger = LogFactory.getLog(BillingConfiguration.class);
-
 	@Autowired
 	public JobBuilderFactory jobBuilderFactory;
 
diff --git a/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/test/java/io/spring/billrun/BillrunApplicationTests.java b/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/test/java/io/spring/billrun/BillrunApplicationTests.java
index f8eb1eb..ebfac98 100644
--- a/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/test/java/io/spring/billrun/BillrunApplicationTests.java
+++ b/dataflow-website/batch-developer-guides/batch/batchsamples/billrun/src/test/java/io/spring/billrun/BillrunApplicationTests.java
@@ -3,7 +3,6 @@ package io.spring.billrun;
 import java.util.List;
 
 import io.spring.billrun.model.Bill;
-import io.spring.billrun.model.Usage;
 import javax.sql.DataSource;
 import org.junit.Before;
 import org.junit.Test;
diff --git a/dataflow-website/batch-developer-guides/batch/batchsamples/billsetuptask/pom.xml b/dataflow-website/batch-developer-guides/batch/batchsamples/billsetuptask/pom.xml
index 8c1b093..d91c003 100644
--- a/dataflow-website/batch-developer-guides/batch/batchsamples/billsetuptask/pom.xml
+++ b/dataflow-website/batch-developer-guides/batch/batchsamples/billsetuptask/pom.xml
@@ -36,6 +36,10 @@
 			<artifactId>mysql-connector-java</artifactId>
 			<scope>runtime</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>