diff --git a/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java b/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java
index 301304deb71..f5a8d173ba3 100644
--- a/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java
+++ b/buildSrc/src/main/java/org/springframework/boot/build/classpath/CheckClasspathForProhibitedDependencies.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -79,6 +79,9 @@ public class CheckClasspathForProhibitedDependencies extends DefaultTask {
 		if (group.equals("org.slf4j") && id.getName().equals("jcl-over-slf4j")) {
 			return true;
 		}
+		if (group.startsWith("org.jboss.spec")) {
+			return true;
+		}
 		return false;
 	}
 
diff --git a/spring-boot-project/spring-boot-starters/spring-boot-starter-undertow/build.gradle b/spring-boot-project/spring-boot-starters/spring-boot-starter-undertow/build.gradle
index d8d8687a674..9c4d02300bc 100644
--- a/spring-boot-project/spring-boot-starters/spring-boot-starter-undertow/build.gradle
+++ b/spring-boot-project/spring-boot-starters/spring-boot-starter-undertow/build.gradle
@@ -7,13 +7,15 @@ description = "Starter for using Undertow as the embedded servlet container. An
 dependencies {
 	api("io.undertow:undertow-core")
 	api("io.undertow:undertow-servlet") {
-		exclude group: "org.jboss.spec.javax.annotation", module: "jboss-annotations-api_1.2_spec"
+		exclude group: "org.jboss.spec.javax.annotation", module: "jboss-annotations-api_1.3_spec"
 		exclude group: "org.jboss.spec.javax.servlet", module: "jboss-servlet-api_4.0_spec"
 	}
 	api("io.undertow:undertow-websockets-jsr") {
-		exclude group: "org.jboss.spec.javax.annotation", module: "jboss-annotations-api_1.2_spec"
+		exclude group: "org.jboss.spec.javax.annotation", module: "jboss-annotations-api_1.3_spec"
 		exclude group: "org.jboss.spec.javax.servlet", module: "jboss-servlet-api_4.0_spec"
+		exclude group: "org.jboss.spec.javax.websocket", module: "jboss-websocket-api_1.1_spec"
 	}
 	api("jakarta.servlet:jakarta.servlet-api")
+	api("jakarta.websocket:jakarta.websocket-api")
 	api("org.apache.tomcat.embed:tomcat-embed-el")
 }