diff --git a/build.gradle b/build.gradle
index 52e3b8594e8..2990386617c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -61,7 +61,7 @@ configure(allprojects) { project ->
 	ext.jtaVersion           = "1.2"
 	ext.junitVersion         = "4.12"
 	ext.log4jVersion         = "1.2.17"
-	ext.nettyVersion         = "4.1.1.Final"
+	ext.nettyVersion         = "4.1.3.Final"
 	ext.okhttpVersion        = "2.7.5"
 	ext.okhttp3Version       = "3.3.1"
 	ext.openjpaVersion       = "2.4.1"
@@ -74,7 +74,7 @@ configure(allprojects) { project ->
 	ext.testngVersion        = "6.9.10"
 	ext.tiles2Version        = "2.2.2"
 	ext.tiles3Version        = "3.0.5"
-	ext.tomcatVersion        = "8.5.3"
+	ext.tomcatVersion        = "8.5.4"
 	ext.tyrusVersion         = "1.3.5"  // constrained by WebLogic 12.1.3 support
 	ext.undertowVersion      = "1.4.0.CR2"
 	ext.xmlunitVersion       = "1.6"