diff --git a/SPD-classes/build.gradle b/SPD-classes/build.gradle
index 92c3492cf..5a4d4a927 100644
--- a/SPD-classes/build.gradle
+++ b/SPD-classes/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion 24
-    buildToolsVersion "24.0.2"
+    buildToolsVersion "24.0.3"
 
     task ndkBuild(type: Exec){
         description "builds JNI libs from source. " +
diff --git a/core/build.gradle b/core/build.gradle
index afec616c6..a74e78e95 100644
--- a/core/build.gradle
+++ b/core/build.gradle
@@ -2,7 +2,7 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 24
-    buildToolsVersion "24.0.2"
+    buildToolsVersion "24.0.3"
 
     buildTypes {
         release {
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index dbdc05d27..7c45b23cc 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,6 @@
+#Thu Oct 13 15:17:09 EDT 2016
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.1-all.zip