diff --git a/build.gradle b/build.gradle
index a14e7f68d31..a0752c16044 100644
--- a/build.gradle
+++ b/build.gradle
@@ -40,22 +40,22 @@ ext {
 	freemarkerVersion    = "2.3.27-incubating"
 	groovyVersion        = "2.4.15"
 	hsqldbVersion        = "2.4.1"
-	jackson2Version      = "2.9.6"
+	jackson2Version      = "2.9.7"
 	jettyVersion         = "9.4.12.v20180830"
 	junitJupiterVersion  = "5.0.3"
 	junitPlatformVersion = "1.0.3"
 	junitVintageVersion  = "4.12.3"
 	kotlinVersion        = "1.2.51"
 	log4jVersion         = "2.11.1"
-	nettyVersion         = "4.1.29.Final"
+	nettyVersion         = "4.1.30.Final"
 	reactorVersion       = "Bismuth-BUILD-SNAPSHOT"
 	rxjavaVersion        = "1.3.8"
 	rxjavaAdapterVersion = "1.2.1"
 	rxjava2Version       = "2.1.17"
 	slf4jVersion         = "1.7.25"	  // spring-jcl + consistent 3rd party deps
 	tiles3Version        = "3.0.8"
-	tomcatVersion        = "8.5.33"
-	undertowVersion      = "1.4.25.Final"
+	tomcatVersion        = "8.5.34"
+	undertowVersion      = "1.4.26.Final"
 
 	gradleScriptDir = "${rootProject.projectDir}/gradle"
 	withoutJclOverSlf4J = {
diff --git a/spring-web/spring-web.gradle b/spring-web/spring-web.gradle
index 321314287bf..6301bac9128 100644
--- a/spring-web/spring-web.gradle
+++ b/spring-web/spring-web.gradle
@@ -80,5 +80,5 @@ dependencies {
 	testRuntime("com.sun.xml.bind:jaxb-core:2.3.0")
 	testRuntime("com.sun.xml.bind:jaxb-impl:2.3.0")
 	testRuntime("javax.json:javax.json-api:1.1.2")
-	testRuntime("org.apache.johnzon:johnzon-jsonb:1.1.9")
+	testRuntime("org.apache.johnzon:johnzon-jsonb:1.1.10")
 }
diff --git a/spring-webflux/spring-webflux.gradle b/spring-webflux/spring-webflux.gradle
index 0d1d7af2328..4428d748e16 100644
--- a/spring-webflux/spring-webflux.gradle
+++ b/spring-webflux/spring-webflux.gradle
@@ -52,7 +52,7 @@ dependencies {
 	testCompile("org.jetbrains.kotlin:kotlin-script-runtime:${kotlinVersion}")
 	testRuntime("org.jetbrains.kotlin:kotlin-script-util:${kotlinVersion}")
 	testRuntime("org.jetbrains.kotlin:kotlin-compiler:${kotlinVersion}")
-	testRuntime("org.jruby:jruby:9.1.16.0")
+	testRuntime("org.jruby:jruby:9.1.17.0")
 	testRuntime("org.python:jython-standalone:2.7.1")
 	testRuntime("org.synchronoss.cloud:nio-multipart-parser:1.1.0")
 	testRuntime("org.webjars:underscorejs:1.8.3")
diff --git a/spring-webmvc/spring-webmvc.gradle b/spring-webmvc/spring-webmvc.gradle
index b3886cd1b7c..62a08c4c0e3 100644
--- a/spring-webmvc/spring-webmvc.gradle
+++ b/spring-webmvc/spring-webmvc.gradle
@@ -73,7 +73,7 @@ dependencies {
 	testCompile("org.jetbrains.kotlin:kotlin-script-runtime:${kotlinVersion}")
 	testRuntime("org.jetbrains.kotlin:kotlin-script-util:${kotlinVersion}")
 	testRuntime("org.jetbrains.kotlin:kotlin-compiler:${kotlinVersion}")
-	testRuntime("org.jruby:jruby:9.1.16.0")
+	testRuntime("org.jruby:jruby:9.1.17.0")
 	testRuntime("org.python:jython-standalone:2.7.1")
 	testRuntime("org.webjars:underscorejs:1.8.3")
 	testRuntime("org.glassfish:javax.el:3.0.1-b08")