diff --git a/pom.xml b/pom.xml
index 47198b6..40678b7 100644
--- a/pom.xml
+++ b/pom.xml
@@ -109,7 +109,7 @@
         <dependency>
             <groupId>org.apache.tomcat.embed</groupId>
             <artifactId>tomcat-embed-core</artifactId>
-            <version>9.0.99</version>
+            <version>11.0.5</version>
         </dependency>
         <dependency>
             <groupId>org.springframework.security</groupId>
@@ -157,7 +157,7 @@
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
             <!-- max version -->
-            <version>1.2.13</version>
+            <version>1.3.15</version>
         </dependency>
         <!-- ignore: spring-web, spring-webmvc, spring-context -->
     </dependencies>