diff --git a/client/pom.xml b/client/pom.xml
index a242ca0..0ccc47d 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -21,7 +21,7 @@
     <dependency>
       <groupId>org.springframework.security</groupId>
       <artifactId>spring-security-core</artifactId>
-      <version>5.1.2.RELEASE</version>
+      <version>5.1.11.RELEASE</version>
     </dependency>
     <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
     <dependency>