diff --git a/distribution/modules/src/main/resources/modules/org/keycloak/keycloak-undertow-adapter/main/module.xml b/distribution/modules/src/main/resources/modules/org/keycloak/keycloak-undertow-adapter/main/module.xml
index 774b279..9d19d40 100755
--- a/distribution/modules/src/main/resources/modules/org/keycloak/keycloak-undertow-adapter/main/module.xml
+++ b/distribution/modules/src/main/resources/modules/org/keycloak/keycloak-undertow-adapter/main/module.xml
@@ -35,6 +35,7 @@
<module name="org.apache.httpcomponents" />
<module name="javax.servlet.api"/>
<module name="org.jboss.logging"/>
+ <module name="org.jboss.xnio"/>
<module name="io.undertow.core"/>
<module name="io.undertow.servlet"/>
<module name="org.keycloak.keycloak-adapter-core"/>
