diff --git a/app/build.gradle b/app/build.gradle
index ae588bbc7..d9c06b35e 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,13 +3,13 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 27
-    buildToolsVersion "27.0.3"
+    compileSdkVersion 28
+    buildToolsVersion "28.0.2"
 
     defaultConfig {
         applicationId "com.simplemobiletools.calendar"
         minSdkVersion 16
-        targetSdkVersion 27
+        targetSdkVersion 28
         versionCode 127
         versionName "4.1.3"
         multiDexEnabled true
@@ -42,7 +42,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:4.6.10'
+    implementation 'com.simplemobiletools:commons:4.7.5'
     implementation 'joda-time:joda-time:2.9.9'
     implementation 'com.facebook.stetho:stetho:1.5.0'
     implementation 'com.android.support:multidex:1.0.3'
diff --git a/build.gradle b/build.gradle
index b7a332342..8a3727559 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,11 +1,11 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.2.60'
+    ext.kotlin_version = '1.2.61'
 
     repositories {
-        jcenter()
         google()
+        jcenter()
     }
 
     dependencies {
@@ -19,8 +19,8 @@ buildscript {
 
 allprojects {
     repositories {
-        jcenter()
         google()
+        jcenter()
         maven { url "https://jitpack.io" }
     }
 }