diff --git a/app/build.gradle b/app/build.gradle
index d899278d..b6962572 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -67,7 +67,7 @@ dependencies {
     implementation "androidx.constraintlayout:constraintlayout:$constraint_layout_version"
     implementation "androidx.navigation:navigation-fragment-ktx:$navigation_version"
     implementation "androidx.navigation:navigation-ui-ktx:$navigation_version"
-    implementation "androidx.preference:preference:$preference_version"
+    implementation "androidx.preference:preference-ktx:$preference_version"
     implementation "androidx.room:room-runtime:$room_version"
     implementation "androidx.room:room-ktx:$room_version"
     kapt "androidx.room:room-compiler:$room_version"
@@ -80,7 +80,6 @@ dependencies {
     implementation "com.squareup.retrofit2:retrofit:$retrofit_version"
     implementation "com.squareup.retrofit2:converter-moshi:$retrofit_version"
 
-    implementation "com.github.AppIntro:AppIntro:$app_intro_version"
     implementation "org.osmdroid:osmdroid-android:$osmdroid_version"
     implementation "com.github.davidmoten:predict4java:$predict4java_version"
 }
diff --git a/build.gradle b/build.gradle
index efab7958..85144e24 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,7 +19,7 @@
 
 buildscript {
     ext {
-        gradle_version = '4.0.2'
+        gradle_version = '4.1.0'
         gradle_plugin_version = '1.4.10'
         material_version = '1.2.1'
         constraint_layout_version = '2.0.2'
@@ -29,14 +29,12 @@ buildscript {
         hilt_version = '2.29.1-alpha'
         hilt_viewmodel_version = '1.0.0-alpha02'
         retrofit_version = '2.9.0'
-        app_intro_version = '6.0.0'
         osmdroid_version = '6.1.8'
         predict4java_version = '1.3.1'
     }
     repositories {
         google()
         jcenter()
-        maven { url "https://jitpack.io" }
     }
     dependencies {
         classpath "com.android.tools.build:gradle:$gradle_version"
@@ -50,7 +48,6 @@ allprojects {
     repositories {
         google()
         jcenter()
-        maven { url "https://jitpack.io" }
     }
 }
 
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 8f0588cc..f3bbd5ae 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,26 +1,6 @@
-#
-# Look4Sat. Amateur radio and weather satellite tracker and passes predictor for Android.
-# Copyright (C) 2019, 2020 Arty Bishop (bishop.arty@gmail.com)
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License along
-# with this program; if not, write to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-#
-
-#Mon Feb 24 22:26:03 GMT 2020
+#Mon Oct 12 23:30:44 BST 2020
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
-distributionSha256Sum=abc10bcedb58806e8654210f96031db541bcd2d6fc3161e81cb0572d6a15e821
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip