diff --git a/build.gradle b/build.gradle
index 0b85d72..6b16f59 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,8 +9,8 @@ buildscript {
 		maven { url 'https://repo.spring.io/plugins-release' }
 	}
 	dependencies {
-		classpath 'io.spring.gradle:propdeps-plugin:0.0.8'
-		classpath 'io.spring.gradle:spring-io-plugin:0.0.7.RELEASE'
+		classpath 'io.spring.gradle:propdeps-plugin:0.0.10.RELEASE'
+		classpath 'io.spring.gradle:spring-io-plugin:0.0.8.RELEASE'
 		classpath 'org.asciidoctor:asciidoctor-gradle-plugin:1.5.3'
 	}
 }
@@ -174,7 +174,7 @@ ext {
 			"driver34-mongo20"  : [mongoDriverVersion: "3.4.2", springDataMongoVersion: "2.0.0.RELEASE"],
 			"jedis29-redis20"   : [jedisVersion: "2.9.0", springDataRedisVersion: "2.0.0.RELEASE"],
 			"lettuce5-redis20"  : [lettuceVersion: "5.0.0.RELEASE", springDataRedisVersion: "2.0.0.RELEASE"],
-			"driver313-cass20"  : [cassandraDriverVersion: "3.1.3", springDataCassandraVersion: "2.0.0.RELEASE"],
+			"driver330-cass20"  : [cassandraDriverVersion: "3.3.0", springDataCassandraVersion: "2.0.0.RELEASE"],
 			"amqp20"            : [springAmqpVersion: "2.0.0.RELEASE"],
 			"spring50"          : [springVersion: "5.0.0.RELEASE"],
 			"tomcat85"          : [tomcatVersion: "8.5.13"],
@@ -203,5 +203,5 @@ task dist(dependsOn: assemble) {
 }
 
 task wrapper(type: Wrapper) {
-	gradleVersion = '3.5'
+	gradleVersion = '4.2.1'
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 9f9ef63..ed88a04 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 9579553..74bb778 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,5 @@
-#Tue Apr 11 14:24:54 CDT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.2.1-bin.zip
diff --git a/gradlew b/gradlew
index 4453cce..cccdd3d 100755
--- a/gradlew
+++ b/gradlew
@@ -33,11 +33,11 @@ DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +155,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }