diff --git a/authorization_server/pom.xml b/authorization_server/pom.xml
index 67a88f98..9ac3ac73 100644
--- a/authorization_server/pom.xml
+++ b/authorization_server/pom.xml
@@ -73,7 +73,7 @@
         <dependency>
             <groupId>org.springframework.security.oauth</groupId>
             <artifactId>spring-security-oauth2</artifactId>
-            <version>2.4.0.RELEASE</version>
+            <version>2.5.2.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>