diff --git a/build.gradle b/build.gradle
index aa18d4ecf8..a5131687fa 100644
--- a/build.gradle
+++ b/build.gradle
@@ -88,9 +88,9 @@ configure(allprojects) { project ->
 	ext.snifferVersion         = "1.15"
 	ext.testngVersion          = "6.9.12"
 	ext.tiles3Version          = "3.0.5"
-	ext.tomcatVersion          = "8.5.4"
+	ext.tomcatVersion          = "8.5.5"
 	ext.tyrusVersion           = "1.13"
-	ext.undertowVersion        = "1.4.0.Final"
+	ext.undertowVersion        = "1.4.2.Final"
 	ext.websocketVersion       = "1.1"
 	ext.woodstoxVersion        = "5.0.2"
 	ext.xmlunitVersion         = "2.2.1"