diff --git a/pom.xml b/pom.xml
index 18121ce..915b5a8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -9,7 +9,7 @@
     <url>http://maven.apache.org</url>
 
     <properties>
-        <spring.version>4.3.18.RELEASE</spring.version>
+        <spring.version>5.2.21.RELEASE</spring.version>
         <junit.version>4.12</junit.version>
         <commons.lang.version>3.4</commons.lang.version>
         <guava.version>19.0</guava.version>