diff --git a/build.gradle b/build.gradle
index a76ee3c7bc..9863b0caaa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -54,7 +54,7 @@ configure(allprojects) { project ->
 	ext.tiles3Version        = "3.0.5"
 	ext.tomcatVersion        = "8.0.15"
 	ext.tyrusVersion         = "1.3.5"  // constrained by WebLogic 12.1.3 support
-	ext.undertowVersion      = "1.1.0.Final"
+	ext.undertowVersion      = "1.1.1.Final"
 	ext.woodstoxVersion      = "4.4.1"
 	ext.xstreamVersion       = "1.4.7"
 
@@ -737,7 +737,7 @@ project("spring-websocket") {
 			exclude group: "org.jboss.spec.javax.annotation", module: "jboss-annotations-api_1.2_spec"
 		}
 		optional("io.undertow:undertow-websockets-jsr:${undertowVersion}") {
-			exclude group: "org.jboss.spec.javax.websocket", module: "jboss-websocket-api_1.0_spec"
+			exclude group: "org.jboss.spec.javax.websocket", module: "jboss-websocket-api_1.1_spec"
 		}
 		optional("com.fasterxml.jackson.core:jackson-databind:${jackson2Version}")
 		testCompile("org.apache.tomcat.embed:tomcat-embed-core:${tomcatVersion}")