diff --git a/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.jar b/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.jar
index 4cb35010..1ce6e58f 100644
Binary files a/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.jar and b/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.properties b/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.properties
index a39b340e..44d9d03d 100644
--- a/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.properties
+++ b/initializr-generator/src/main/resources/project/gradle4/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Jul 28 13:37:07 BST 2017
+#Tue Feb 06 12:27:20 CET 2018
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.5.1-bin.zip
diff --git a/initializr-generator/src/main/resources/project/gradle4/gradlew b/initializr-generator/src/main/resources/project/gradle4/gradlew
index cccdd3d5..4453ccea 100755
--- a/initializr-generator/src/main/resources/project/gradle4/gradlew
+++ b/initializr-generator/src/main/resources/project/gradle4/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 " "
 }
diff --git a/initializr-generator/src/test/java/io/spring/initializr/generator/ProjectGeneratorTests.java b/initializr-generator/src/test/java/io/spring/initializr/generator/ProjectGeneratorTests.java
index cbb8ea33..d3526655 100644
--- a/initializr-generator/src/test/java/io/spring/initializr/generator/ProjectGeneratorTests.java
+++ b/initializr-generator/src/test/java/io/spring/initializr/generator/ProjectGeneratorTests.java
@@ -353,7 +353,7 @@ public class ProjectGeneratorTests extends AbstractProjectGeneratorTests {
 		ProjectRequest request = createProjectRequest("web");
 		request.setType("gradle-project");
 		request.setBootVersion("2.0.0.M4");
-		generateProject(request).isGradleProject("4.2");
+		generateProject(request).isGradleProject("4.5.1");
 	}
 
 	@Test
@@ -361,7 +361,7 @@ public class ProjectGeneratorTests extends AbstractProjectGeneratorTests {
 		ProjectRequest request = createProjectRequest("web");
 		request.setType("gradle-project");
 		request.setBootVersion("2.0.0.BUILD-SNAPSHOT");
-		generateProject(request).isGradleProject("4.2");
+		generateProject(request).isGradleProject("4.5.1");
 	}
 
 	@Test