diff --git a/build.gradle b/build.gradle
index e1af45a55..e63e012e6 100644
--- a/build.gradle
+++ b/build.gradle
@@ -66,9 +66,9 @@ task createZipDistribution(type:Zip,dependsOn:["dist","libDist"], description:"P
     archiveName "jME" + jmeFullVersion + ".zip"
     into("/") {
          from {"./dist"}
-    }            
+    }
     into("/sources") {
-        from {"$buildDir/libDist/sources"}     
+        from {"$buildDir/libDist/sources"}
     }
 }
 
@@ -88,14 +88,14 @@ task dist(dependsOn: [':jme3-examples:dist', 'mergedJavadoc']){
 task mergedJavadoc(type: Javadoc, description: 'Creates Javadoc from all the projects.') {
     title = 'jMonkeyEngine3'
     destinationDir = mkdir("dist/javadoc")
-    
+
     options.encoding = 'UTF-8'
 
     // Allows Javadoc to be generated on Java 8 despite doclint errors.
     if (JavaVersion.current().isJava8Compatible()) {
         options.addStringOption('Xdoclint:none', '-quiet')
     }
-    
+
     options.overview = file("javadoc-overview.html")
     // Note: The closures below are executed lazily.
     source subprojects.collect {project ->
@@ -116,7 +116,7 @@ task mergedSource(type: Copy){
 }
 
 task wrapper(type: Wrapper, description: 'Creates and deploys the Gradle wrapper to the current directory.') {
-    gradleVersion = '3.2.1'
+    gradleVersion = '4.1'
 }
 
 ext {
@@ -137,7 +137,7 @@ task configureAndroidNDK {
     if (System.env.ANDROID_NDK != null) {
         ndkBuildPath = System.env.ANDROID_NDK + File.separator + ndkBuildFile
     }
-    
+
     if (new File(ndkBuildPath).exists()) {
         ndkExists = true
         ndkCommandPath = ndkBuildPath
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index ca78035ef..51288f9c2 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 e89f72e3d..3a174dff1 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Fri Nov 25 13:05:50 EST 2016
+#Sun Sep 17 22:55:30 EDT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.2.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-bin.zip
diff --git a/gradlew b/gradlew
index 27309d923..4453ccea3 100755
--- a/gradlew
+++ b/gradlew
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/usr/bin/env sh
 
 ##############################################################################
 ##
@@ -154,11 +154,19 @@ if $cygwin ; then
     esac
 fi
 
-# Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules
-function splitJvmOpts() {
-    JVM_OPTS=("$@")
+# Escape application args
+save ( ) {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
 }
-eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS
-JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME"
+APP_ARGS=$(save "$@")
 
-exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@"
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
index f6d5974e7..e95643d6a 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -49,7 +49,6 @@ goto fail
 @rem Get command-line arguments, handling Windows variants
 
 if not "%OS%" == "Windows_NT" goto win9xME_args
-if "%@eval[2+2]" == "4" goto 4NT_args
 
 :win9xME_args
 @rem Slurp the command line arguments.
@@ -60,11 +59,6 @@ set _SKIP=2
 if "x%~1" == "x" goto execute
 
 set CMD_LINE_ARGS=%*
-goto execute
-
-:4NT_args
-@rem Get arguments from the 4NT Shell from JP Software
-set CMD_LINE_ARGS=%$
 
 :execute
 @rem Setup the command line