diff --git a/pom.xml b/pom.xml
index 6a8b2914dca..73b47c91219 100644
--- a/pom.xml
+++ b/pom.xml
@@ -123,7 +123,7 @@
         <dependency>
             <groupId>io.undertow</groupId>
             <artifactId>undertow-core</artifactId>
-            <version>2.3.17.Final</version>
+            <version>2.3.21.Final</version>
         </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.core</groupId>