diff --git a/project/app/build.gradle b/project/app/build.gradle
index a9e62f52..8fbdd0af 100644
--- a/project/app/build.gradle
+++ b/project/app/build.gradle
@@ -24,12 +24,18 @@ import java.text.SimpleDateFormat
 
 buildscript {
     repositories {
-        mavenCentral()
         jcenter()
+        mavenCentral()
+        mavenLocal()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
+
     }
     dependencies {
         //noinspection GradleDynamicVersion
-        classpath 'com.android.tools.build:gradle:2.2.0-alpha3'
+        classpath 'com.android.tools.build:gradle:2.1.3'
         classpath 'commons-codec:commons-codec:1.10'
     }
 }
@@ -43,11 +49,15 @@ repositories {
         url "https://jitpack.io"
     }
     jcenter()
+    maven {
+        url 'https://maven.google.com/'
+        name 'Google'
+    }
 }
 
 android {
     compileSdkVersion 23
-    buildToolsVersion '23.0.3'
+    buildToolsVersion '25.0.0'
 
     lintOptions {
         checkReleaseBuilds true
@@ -56,7 +66,7 @@ android {
 
     defaultConfig {
         minSdkVersion 16
-        targetSdkVersion 23
+        targetSdkVersion 26
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
     }
diff --git a/project/build.gradle b/project/build.gradle
index 3b64cc51..38ae547c 100644
--- a/project/build.gradle
+++ b/project/build.gradle
@@ -3,15 +3,24 @@
 buildscript {
     repositories {
         mavenCentral()
+        jcenter()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
     dependencies {
         //noinspection GradleDynamicVersion
-        classpath 'com.android.tools.build:gradle:2.2.0-alpha3'
+        classpath 'com.android.tools.build:gradle:2.3.1'
     }
 }
 
 allprojects {
     repositories {
         mavenCentral()
+        maven {
+            url 'https://maven.google.com/'
+            name 'Google'
+        }
     }
 }
diff --git a/project/gradle/wrapper/gradle-wrapper.properties b/project/gradle/wrapper/gradle-wrapper.properties
index 7e003998..4506447f 100644
--- a/project/gradle/wrapper/gradle-wrapper.properties
+++ b/project/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Sat Jan 09 14:19:06 EET 2016
+#Mon Sep 02 09:08:35 COT 2019
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-all.zip