diff --git a/Chapter 6/TransactionProcessing/pom.xml b/Chapter 6/TransactionProcessing/pom.xml
index 2ab9fb0..3ca127d 100644
--- a/Chapter 6/TransactionProcessing/pom.xml	
+++ b/Chapter 6/TransactionProcessing/pom.xml	
@@ -111,7 +111,7 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-log4j12</artifactId>
-			<version>1.5.8</version>
+			<version>1.7.34</version>
 			<optional>true</optional>
 		</dependency>
 		<dependency>