diff --git a/chapter9/pom.xml b/chapter9/pom.xml
index b3f29d4..040ea1d 100644
--- a/chapter9/pom.xml
+++ b/chapter9/pom.xml
@@ -60,7 +60,7 @@
 
     <properties>
         <file.encoding>UTF-8</file.encoding>
-        <spring.version>4.2.2.RELEASE</spring.version>
+        <spring.version>5.2.20.RELEASE</spring.version>
         <groovy.version>2.3.6</groovy.version>
         <slf4j.version>1.7.5</slf4j.version>
         <testng.version>6.8.7</testng.version>