diff --git a/spring-boot-project/spring-boot-dependencies/build.gradle b/spring-boot-project/spring-boot-dependencies/build.gradle
index 2adce49696..15883cd5f7 100644
--- a/spring-boot-project/spring-boot-dependencies/build.gradle
+++ b/spring-boot-project/spring-boot-dependencies/build.gradle
@@ -2197,6 +2197,10 @@ bom {
 		}
 	}
 	library("Undertow", "2.3.13.Final") {
+		prohibit {
+			versionRange "[2.3.14.Final]"
+			because "it contains a regression (https://issues.redhat.com/browse/UNDERTOW-2420)"
+		}
 		group("io.undertow") {
 			modules = [
 				"undertow-core",