diff --git a/app/build.gradle b/app/build.gradle
index 283da3334..cbed882cc 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -40,6 +40,10 @@ android {
         }
     }
 
+    dexOptions {
+        javaMaxHeapSize "4g"
+    }
+
     buildTypes {
         release {
             minifyEnabled false
@@ -88,17 +92,13 @@ android {
 }
 
 ext {
-    supportLibraryVersion = '27.1.1'
+    supportLibraryVersion = '28.0.0'
     workVersion = "1.0.0-alpha09"
 }
 
 
 configurations.all {
     exclude group: 'com.google.firebase', module: 'firebase-core'
-    resolutionStrategy {
-        force "com.android.support:cardview-v7:${supportLibraryVersion}"
-        force "com.android.support:preference-v7:${supportLibraryVersion}"
-    }
 }
 
 dependencies {
@@ -114,7 +114,7 @@ dependencies {
 
     implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
 
-    implementation 'androidx.multidex:multidex:2.0.0'
+    implementation 'com.android.support:multidex:1.0.3'
 
     implementation 'io.reactivex.rxjava2:rxandroid:2.1.0'
     implementation "io.reactivex.rxjava2:rxjava:2.2.2"
@@ -158,9 +158,6 @@ dependencies {
     implementation 'com.jakewharton:butterknife:9.0.0-SNAPSHOT'
     annotationProcessor 'com.jakewharton:butterknife-compiler:9.0.0-SNAPSHOT'
 
-    debugImplementation 'com.squareup.leakcanary:leakcanary-android:1.5.4'
-    releaseImplementation 'com.squareup.leakcanary:leakcanary-android-no-op:1.5.4'
-
     implementation 'com.github.HITGIF:TextFieldBoxes:1.4.3'
 
     implementation 'eu.davidea:flexible-adapter:5.1.0'
diff --git a/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.java b/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.java
index 6332545f2..316e5e596 100644
--- a/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.java
+++ b/app/src/main/java/com/nextcloud/talk/application/NextcloudTalkApplication.java
@@ -43,8 +43,6 @@ import com.nextcloud.talk.utils.DisplayUtils;
 import com.nextcloud.talk.utils.database.user.UserModule;
 import com.nextcloud.talk.utils.singletons.ApplicationWideStateHolder;
 import com.nextcloud.talk.webrtc.MagicWebRTCUtils;
-import com.squareup.leakcanary.LeakCanary;
-import com.squareup.leakcanary.RefWatcher;
 
 import org.webrtc.PeerConnectionFactory;
 import org.webrtc.voiceengine.WebRtcAudioManager;
@@ -77,10 +75,6 @@ import autodagger.AutoInjector;
 public class NextcloudTalkApplication extends MultiDexApplication implements LifecycleObserver {
     private static final String TAG = NextcloudTalkApplication.class.getSimpleName();
 
-    //region Public variables
-    public static RefWatcher refWatcher;
-    //endregion
-
     //region Singleton
     protected static NextcloudTalkApplication sharedApplication;
     //region Fields (components)
@@ -126,7 +120,6 @@ public class NextcloudTalkApplication extends MultiDexApplication implements Lif
         buildComponent();
 
         componentApplication.inject(this);
-        refWatcher = LeakCanary.install(this);
 
         new ClosedInterfaceImpl().providerInstallerInstallIfNeededAsync();
         DeviceUtils.ignoreSpecialBatteryFeatures();
diff --git a/build.gradle b/build.gradle
index c43307452..f46c70997 100644
--- a/build.gradle
+++ b/build.gradle
@@ -13,7 +13,7 @@ buildscript {
         }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.2.0'
+        classpath 'com.android.tools.build:gradle:3.3.0-alpha13'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${kotlinVersion}"
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle.properties b/gradle.properties
index a066d344a..43fa8a2dc 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,7 +9,7 @@
 
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx1536m
+org.gradle.jvmargs=-XX:MaxHeapSize\=2048m -Xmx2048m
 
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 17ee6ae82..c75c68764 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,5 +3,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip
-distributionSha256Sum=9af7345c199f1731c187c96d3fe3d31f5405192a42046bafa71d846c3d9adacb
\ No newline at end of file
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip
+distributionSha256Sum=b7aedd369a26b177147bcb715f8b1fc4fe32b0a6ade0d7fd8ee5ed0c6f731f2c