diff --git a/pom.xml b/pom.xml
index f688efb..5651a12 100644
--- a/pom.xml
+++ b/pom.xml
@@ -45,7 +45,7 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <spring.version>3.2.17.RELEASE</spring.version>
+    <spring.version>4.3.20.RELEASE</spring.version>
     <log4j.version>1.2.17</log4j.version>
   </properties>
 
@@ -161,11 +161,6 @@
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
-       <dependency>
-           <groupId>org.springframework.security</groupId>
-           <artifactId>spring-security-crypto</artifactId>
-           <version>3.2.9.RELEASE</version>
-       </dependency>
        <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>