diff --git a/chat-server/pom.xml b/chat-server/pom.xml
index 58a8421..edba91c 100644
--- a/chat-server/pom.xml
+++ b/chat-server/pom.xml
@@ -20,7 +20,7 @@
         <java.version>8</java.version>
         <junit.jupiter.version>5.6.2</junit.jupiter.version>
         <projectlombok.lombok.version>1.18.12</projectlombok.lombok.version>
-        <springframework.security.version>5.3.3.RELEASE</springframework.security.version>
+        <springframework.security.version>5.3.9.RELEASE</springframework.security.version>
         <mockito.version>3.4.4</mockito.version>
         <start-class>com.mleimer.chat.ChatApplication</start-class>
     </properties>