diff --git a/Lesson21.CRUD_App1/pom.xml b/Lesson21.CRUD_App1/pom.xml
index ad5b303f..c0a6648f 100644
--- a/Lesson21.CRUD_App1/pom.xml
+++ b/Lesson21.CRUD_App1/pom.xml
@@ -18,7 +18,7 @@
     <maven.compiler.source>1.7</maven.compiler.source>
     <maven.compiler.target>1.7</maven.compiler.target>
 
-    <spring.version>5.2.1.RELEASE</spring.version>
+    <spring.version>5.2.20.RELEASE</spring.version>
   </properties>
 
   <dependencies>