diff --git a/pom.xml b/pom.xml
index 1442590..c65a23c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
         <skipTests>true</skipTests>
         <maven.compiler.source>1.7</maven.compiler.source>
         <maven.compiler.target>1.7</maven.compiler.target>
-        <spring.version>4.0.0.RELEASE</spring.version>
+        <spring.version>5.2.21.RELEASE</spring.version>
         <javadocExecutable>${java.home}/../bin/javadoc</javadocExecutable>
     </properties>