diff --git a/build.gradle b/build.gradle
index 9db32f74c78..9bb70d9465f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -361,6 +361,6 @@ apply {
 }
 
 task wrapper(type: Wrapper) {
-    gradleVersion = '1.1'
+    gradleVersion = '1.5-rc-1'
     jarFile = 'gradle/wrapper/gradle-wrapper.jar'
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 7f1e239c846..b46aef33a99 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 8d35568275b..790822a1427 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Aug 17 16:00:22 CDT 2012
+#Wed Mar 20 13:37:09 CET 2013
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.1-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-1.5-rc-1-bin.zip
diff --git a/gradlew b/gradlew
index e61422d06d5..91a7e269e19 100755
--- a/gradlew
+++ b/gradlew
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 ##############################################################################
 ##
@@ -61,9 +61,9 @@ while [ -h "$PRG" ] ; do
     fi
 done
 SAVED="`pwd`"
-cd "`dirname \"$PRG\"`/"
+cd "`dirname \"$PRG\"`/" >&-
 APP_HOME="`pwd -P`"
-cd "$SAVED"
+cd "$SAVED" >&-
 
 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar