diff --git a/.travis.yml b/.travis.yml
index 7304e070..6a458c15 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,7 +9,7 @@ android:
 # second 'tools' updates SDK tools 'til last version ** in remote repository number 11 ** (current last one)
   - tools
   - platform-tools
-  - build-tools-24.0.2
+  - build-tools-25.0.2
   - android-24
   - sys-img-armeabi-v7a-android-24
 branches:
diff --git a/build.gradle b/build.gradle
index 995e3daa..182125df 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,7 +3,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.2.3'
+        classpath 'com.android.tools.build:gradle:2.3.1'
     }
 }
 
@@ -19,7 +19,7 @@ dependencies {
 
 android {
     compileSdkVersion 24
-    buildToolsVersion "24.0.2"
+    buildToolsVersion '25.0.2'
 
     sourceSets {
         main {
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index cc9f77f5..a04cf10f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ 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-3.3-all.zip
diff --git a/sample_client/build.gradle b/sample_client/build.gradle
index 27db1bf9..b6227ee2 100644
--- a/sample_client/build.gradle
+++ b/sample_client/build.gradle
@@ -10,7 +10,7 @@ dependencies {
 
 android {
     compileSdkVersion 24
-    buildToolsVersion "24.0.2"
+    buildToolsVersion "25.0.2"
 
     sourceSets {
         main {
diff --git a/test_client/build.gradle b/test_client/build.gradle
index bac9e894..40235b18 100644
--- a/test_client/build.gradle
+++ b/test_client/build.gradle
@@ -12,7 +12,7 @@ dependencies {
 
 android {
     compileSdkVersion 24
-    buildToolsVersion "24.0.2"
+    buildToolsVersion "25.0.2"
 
     sourceSets {
         main {