diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 7ce2eef524..f9516ba6d0 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -1734,7 +1734,7 @@ bom {
 			]
 		}
 	}
-	library("Undertow", "2.2.8.Final") {
+	library("Undertow", "2.2.9.Final") {
 		group("io.undertow") {
 			modules = [
 				"undertow-core",