diff --git a/build.gradle b/build.gradle
index 111bea0..9eea8e1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -10,6 +10,7 @@ buildscript {
   }
 
   dependencies {
+  	// usage: gradle dependencyUpdates -Drevision=release
     classpath 'com.github.ben-manes:gradle-versions-plugin:0.17.0'
   }
 }
@@ -50,5 +51,5 @@ subprojects {
 }
 
 task wrapper(type: Wrapper) {
-    gradleVersion = '4.4'
+    gradleVersion = '4.6'
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 6b6ea3a..01b8bf6 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 0b83b5a..bf03c01 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -2,4 +2,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip
diff --git a/pdb-ui/build.gradle b/pdb-ui/build.gradle
index beec09a..b1eccba 100644
--- a/pdb-ui/build.gradle
+++ b/pdb-ui/build.gradle
@@ -13,15 +13,15 @@ dependencies {
 	compile project(':performanceDb')
 	compile project(':pdb-plotting')
 	
-	compile('org.springframework.boot:spring-boot-starter-mustache:1.5.9.RELEASE') {
+	compile('org.springframework.boot:spring-boot-starter-mustache:1.5.10.RELEASE') {
 		exclude module: 'spring-boot-starter-logging'
 	}
-	compile("org.springframework.boot:spring-boot-starter-web:1.5.9.RELEASE"){
+	compile("org.springframework.boot:spring-boot-starter-web:1.5.10.RELEASE"){
 		exclude module: 'spring-boot-starter-logging'
 	}
-	compile("org.springframework.boot:spring-boot-starter-log4j2:1.5.9.RELEASE")
+	compile("org.springframework.boot:spring-boot-starter-log4j2:1.5.10.RELEASE")
 	
-	testCompile("org.springframework.boot:spring-boot-starter-test:1.5.9.RELEASE")
+	testCompile("org.springframework.boot:spring-boot-starter-test:1.5.10.RELEASE")
 }
 
 jar {