diff --git a/ddd/pom.xml b/ddd/pom.xml
index b0f6a2e..20edfa8 100644
--- a/ddd/pom.xml
+++ b/ddd/pom.xml
@@ -13,7 +13,7 @@
 
     <properties>
         <maven.compiler.source>8</maven.compiler.source>
-        <spring_version>4.3.21.RELEASE</spring_version>
+        <spring_version>5.3.18</spring_version>
     </properties>
 
     <dependencies>
diff --git a/pom.xml b/pom.xml
index 3e95c98..049dbcf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
-            <version>4.3.21.RELEASE</version>
+            <version>5.3.18</version>
         </dependency>
         <dependency>
             <groupId>org.projectlombok</groupId>