diff --git a/.travis.yml b/.travis.yml
index 64274b0..c07e960 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ language: android
 android:
   components:
     - tools
-    - build-tools-23.0.2
+    - build-tools-23.0.3
     - android-23
     - extra
     - platform-tools
diff --git a/app/build.gradle b/app/build.gradle
index f8b6203..c6705a9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,14 +2,14 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion 23
-    buildToolsVersion '23.0.2'
+    buildToolsVersion '23.0.3'
 
     defaultConfig {
         applicationId "com.affectiva.affdexme"
         minSdkVersion 16
         targetSdkVersion 23
-        versionCode 493
-        versionName "3.0.1"
+        versionCode 494
+        versionName "3.1"
         setProperty("archivesBaseName", "AffdexMe-$versionName-$versionCode")
     }
     buildTypes {
@@ -37,7 +37,7 @@ android {
 
 dependencies {
     //include the Affdex SDK
-    compile('com.affectiva.android:affdexsdk:3.0.1')
+    compile('com.affectiva.android:affdexsdk:3.1')
 
     //include project dependencies
     compile 'com.android.support:support-v4:23.1.1'
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
index fb45170..4b0b2d2 100644
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@@ -1,85 +1,9 @@
 # This is a configuration file for ProGuard.
 # http://proguard.sourceforge.net/index.html#manual/usage.html
 
--dontskipnonpubliclibraryclasses
-
-# Optimization is turned off by default. Dex does not like code run
-# through the ProGuard optimize and preverify steps (and performs some
-# of these optimizations on its own).
--dontoptimize
--dontpreverify
-# Note that if you want to enable optimization, you cannot just
-# include optimization flags in your own project configuration file;
-# instead you will need to point to the
-# "proguard-android-optimize.txt" file instead of this one from your
-# project.properties file.
-
--keepattributes Exceptions,InnerClasses,Signature,Deprecated,SourceFile,LineNumberTable,*Annotation*,EnclosingMethod
--keep public class com.google.vending.licensing.ILicensingService
--keep public class com.android.vending.licensing.ILicensingService
-
-# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
--keepclasseswithmembernames class * {
-    native <methods>;
-}
-
-# keep setters in Views so that animations can still work.
-# see http://proguard.sourceforge.net/manual/examples.html#beans
--keepclassmembers public class * extends android.view.View {
-   void set*(***);
-   *** get*();
-}
-
-# We want to keep methods in Activity that could be used in the XML attribute onClick
--keepclassmembers class * extends android.app.Activity {
-   public void *(android.view.View);
-}
-
-# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
--keepclassmembers enum * {
-    public static **[] values();
-    public static ** valueOf(java.lang.String);
-}
-
--keep class * implements android.os.Parcelable {
-  public static final android.os.Parcelable$Creator *;
-}
-
--keepclassmembers class **.R$* {
-    public static <fields>;
-}
-
-# The support library contains references to newer platform versions.
-# Don't warn about those in case this app is linking against an older
-# platform version.  We know about them, and they are safe.
--dontwarn android.support.**
-
-#keep all classes (otherwise Proguard may remove classes that use reflection, injection, Gson, etc...)
--keep class sun.**
--keepclassmembers class sun.** {*;}
--keep class android.**
--keepclassmembers class android.** {*;}
--keep class dagger.**
--keepclassmembers class dagger.** {*;}
--keep class javax.**
--keepclassmembers class javax.** {*;}
-
-#keep certain class members (otherwise Proguard would strip the members of these classes)
--keep class com.**
--keepclassmembers class !com.affectiva.affdexme.MainActivity,!com.affectiva.android.affdex.sdk.detector.Detector {*;}
--keepclassmembers class com.affectiva.android.affdex.sdk.detector.Detector {
-    public void setDetect**;
-}
-
-# Dagger
--dontwarn dagger.internal.codegen.**
--keepclassmembers,allowobfuscation class * {
-	@javax.inject.* *;
-	@dagger.* *;
-	<init>();
-}
--keep class dagger.* { *; }
--keep class javax.inject.* { *; }
--keep class * extends dagger.internal.Binding
--keep class * extends dagger.internal.ModuleAdapter
--keep class * extends dagger.internal.StaticInjection
+# MainActivity accesses the following methods through reflection, so make sure they
+# are kept
+-keep class com.affectiva.android.affdex.sdk.detector.Face$Expressions { float get*(); }
+-keep class com.affectiva.android.affdex.sdk.detector.Face$Emotions { float get*(); }
+-keep class com.affectiva.android.affdex.sdk.detector.Face$Emojis { float get*(); }
+-keep class com.affectiva.android.affdex.sdk.detector.Detector { void setDetect*(boolean); }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 96b31ca..bb64ece 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,6 +11,8 @@
 
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
 
     <uses-feature
         android:name="android.hardware.camera"
diff --git a/app/src/main/java/com/affectiva/affdexme/DrawingView.java b/app/src/main/java/com/affectiva/affdexme/DrawingView.java
index f49387e..6049741 100644
--- a/app/src/main/java/com/affectiva/affdexme/DrawingView.java
+++ b/app/src/main/java/com/affectiva/affdexme/DrawingView.java
@@ -100,6 +100,7 @@ public class DrawingView extends SurfaceView implements SurfaceHolder.Callback {
         drawingThread.requestCaptureBitmap = true;
     }
 
+    @SuppressWarnings("ResourceType")
     void initView() {
         surfaceHolder = getHolder(); //The SurfaceHolder object will be used by the thread to request canvas to draw on SurfaceView
         surfaceHolder.setFormat(PixelFormat.TRANSPARENT); //set to Transparent so this surfaceView does not obscure the one it is overlaying (the one displaying the camera).
diff --git a/build.gradle b/build.gradle
index 46522fe..2a5715a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.1.0'
+        classpath 'com.android.tools.build:gradle:2.1.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -14,6 +14,7 @@ buildscript {
 
 allprojects {
     repositories {
+        mavenLocal()
         maven {
             url "http://maven.affectiva.com"
         }