diff --git a/Chapter03/01.SpinUnContainer/MessagesApp/pom.xml b/Chapter03/01.SpinUnContainer/MessagesApp/pom.xml
index 8f9c730..6154ed0 100644
--- a/Chapter03/01.SpinUnContainer/MessagesApp/pom.xml
+++ b/Chapter03/01.SpinUnContainer/MessagesApp/pom.xml
@@ -10,7 +10,7 @@
 
   <properties>
     <spring.version>5.0.3.RELEASE</spring.version>
-    <log4j.version>2.10.0</log4j.version>
+    <log4j.version>2.15.0</log4j.version>
   </properties>
 
   <dependencies>