diff --git a/build.gradle b/build.gradle
index b7e1dd13..9283b530 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ buildscript {
 	dependencies {
 		classpath 'org.springframework.build.gradle:propdeps-plugin:0.0.7'
 		classpath 'io.spring.gradle:spring-io-plugin:0.0.8.RELEASE'
-		classpath 'org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:2.2.1'
+		classpath 'org.sonarsource.scanner.gradle:sonarqube-gradle-plugin:2.5'
 	}
 }
 
diff --git a/buildSrc/src/main/groovy/org/springframework/restdocs/build/SampleBuildConfigurer.groovy b/buildSrc/src/main/groovy/org/springframework/restdocs/build/SampleBuildConfigurer.groovy
index 39eb3bad..5cc0fefd 100644
--- a/buildSrc/src/main/groovy/org/springframework/restdocs/build/SampleBuildConfigurer.groovy
+++ b/buildSrc/src/main/groovy/org/springframework/restdocs/build/SampleBuildConfigurer.groovy
@@ -116,11 +116,11 @@ public class SampleBuildConfigurer {
 	}
 
 	private Task createGradleBuild(Project project, Object... dependencies) {
-		Task gradleBuild = project.tasks.create("${name}Gradle", GradleBuild)
+		Task gradleBuild = project.tasks.create("${name}Gradle", Exec)
 		gradleBuild.description = "Builds the ${name} sample with Gradle"
 		gradleBuild.group = "Build"
-		gradleBuild.dir = this.workingDir
-		gradleBuild.tasks = ['clean', 'build']
+		gradleBuild.workingDir = this.workingDir
+		gradleBuild.commandLine = [isWindows() ? "${sampleDir.absolutePath}/gradlew.bat" : './gradlew', 'clean', 'build']
 		gradleBuild.dependsOn dependencies
 		return gradleBuild
 	}
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 7d18717c..dddb02e2 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 cd1f40f5..8b72fb0a 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Mar 23 11:47:38 GMT 2017
+#Mon Nov 06 19:55:29 GMT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-bin.zip
diff --git a/samples/junit5/gradle/wrapper/gradle-wrapper.jar b/samples/junit5/gradle/wrapper/gradle-wrapper.jar
index afc752b6..dac65631 100644
Binary files a/samples/junit5/gradle/wrapper/gradle-wrapper.jar and b/samples/junit5/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/junit5/gradle/wrapper/gradle-wrapper.properties b/samples/junit5/gradle/wrapper/gradle-wrapper.properties
index 816de9ef..157a86c9 100644
--- a/samples/junit5/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/junit5/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Mar 23 11:52:19 GMT 2017
+#Mon Nov 06 19:55:51 GMT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-bin.zip
diff --git a/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.jar b/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.jar
index e2bce308..63b8d367 100644
Binary files a/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.jar and b/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.properties b/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.properties
index a4567bcf..4e8d2593 100644
--- a/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/rest-notes-slate/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Mar 23 11:51:47 GMT 2017
+#Mon Nov 06 19:56:00 GMT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-bin.zip
diff --git a/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.jar b/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.jar
index 2ccb7c45..ce17141d 100644
Binary files a/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.jar and b/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.properties b/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.properties
index 785a1992..f2585ee7 100644
--- a/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/rest-notes-spring-hateoas/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Mar 23 11:52:07 GMT 2017
+#Mon Nov 06 19:56:10 GMT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-bin.zip
diff --git a/samples/testng/gradle/wrapper/gradle-wrapper.jar b/samples/testng/gradle/wrapper/gradle-wrapper.jar
index afc752b6..cd5c388d 100644
Binary files a/samples/testng/gradle/wrapper/gradle-wrapper.jar and b/samples/testng/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/testng/gradle/wrapper/gradle-wrapper.properties b/samples/testng/gradle/wrapper/gradle-wrapper.properties
index 816de9ef..2ba17656 100644
--- a/samples/testng/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/testng/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Mar 23 11:52:19 GMT 2017
+#Mon Nov 06 19:56:16 GMT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-bin.zip
diff --git a/samples/web-test-client/gradle/wrapper/gradle-wrapper.jar b/samples/web-test-client/gradle/wrapper/gradle-wrapper.jar
index 98b249f0..a8839542 100644
Binary files a/samples/web-test-client/gradle/wrapper/gradle-wrapper.jar and b/samples/web-test-client/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/samples/web-test-client/gradle/wrapper/gradle-wrapper.properties b/samples/web-test-client/gradle/wrapper/gradle-wrapper.properties
index fff42c29..64b23251 100644
--- a/samples/web-test-client/gradle/wrapper/gradle-wrapper.properties
+++ b/samples/web-test-client/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Thu Mar 23 11:48:10 GMT 2017
+#Mon Nov 06 19:56:25 GMT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.4.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.3-bin.zip