diff --git a/app/build.gradle b/app/build.gradle
index 547286b4..b5ad47eb 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,13 +7,13 @@ def keystoreProperties = new Properties()
 keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
 
 android {
-    compileSdkVersion 28
-    buildToolsVersion "28.0.3"
+    compileSdkVersion 29
+    buildToolsVersion "29.0.2"
 
     defaultConfig {
         applicationId "com.simplemobiletools.filemanager.pro"
         minSdkVersion 21
-        targetSdkVersion 28
+        targetSdkVersion 29
         versionCode 79
         versionName "6.3.7"
         multiDexEnabled true
@@ -52,7 +52,7 @@ android {
 }
 
 dependencies {
-    implementation 'com.simplemobiletools:commons:5.18.30'
+    implementation 'com.simplemobiletools:commons:5.20.2'
     implementation 'com.github.Stericson:RootTools:df729dcb13'
     implementation 'com.github.Stericson:RootShell:1.6'
     implementation 'com.alexvasilkov:gesture-views:2.5.2'
diff --git a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MainActivity.kt
index 803045d0..6e49b88d 100644
--- a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/MainActivity.kt
@@ -198,10 +198,10 @@ class MainActivity : SimpleActivity() {
     private fun initFileManager() {
         if (intent.action == Intent.ACTION_VIEW && intent.data != null) {
             val data = intent.data
-            if (data.scheme == "file") {
-                openPath(data.path)
+            if (data?.scheme == "file") {
+                openPath(data.path!!)
             } else {
-                val path = getRealPathFromURI(data)
+                val path = getRealPathFromURI(data!!)
                 if (path != null) {
                     openPath(path)
                 } else {
@@ -209,8 +209,8 @@ class MainActivity : SimpleActivity() {
                 }
             }
 
-            if (!File(data.path).isDirectory) {
-                tryOpenPathIntent(data.path, false)
+            if (!File(data.path!!).isDirectory) {
+                tryOpenPathIntent(data.path!!, false)
             }
         } else {
             openPath(config.homeFolder)
diff --git a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/ReadTextActivity.kt b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/ReadTextActivity.kt
index 4a4f563f..2d34ad78 100644
--- a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/ReadTextActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/activities/ReadTextActivity.kt
@@ -62,7 +62,7 @@ class ReadTextActivity : SimpleActivity() {
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.menu_save -> saveText()
-            R.id.menu_open_with -> openPath(intent.dataString, true)
+            R.id.menu_open_with -> openPath(intent.dataString!!, true)
             R.id.menu_print -> printText()
             else -> return super.onOptionsItemSelected(item)
         }
@@ -108,7 +108,7 @@ class ReadTextActivity : SimpleActivity() {
 
     private fun saveText() {
         if (filePath.isEmpty()) {
-            filePath = getRealPathFromURI(intent.data) ?: ""
+            filePath = getRealPathFromURI(intent.data!!) ?: ""
         }
 
         SaveAsDialog(this, filePath) {
@@ -165,7 +165,7 @@ class ReadTextActivity : SimpleActivity() {
 
         ensureBackgroundThread {
             originalText = if (uri.scheme == "file") {
-                filePath = uri.path
+                filePath = uri.path!!
                 val file = File(filePath)
                 if (file.exists()) {
                     file.readText()
@@ -175,7 +175,7 @@ class ReadTextActivity : SimpleActivity() {
                 }
             } else {
                 try {
-                    contentResolver.openInputStream(uri).bufferedReader().use { it.readText() }
+                    contentResolver.openInputStream(uri)!!.bufferedReader().use { it.readText() }
                 } catch (e: Exception) {
                     showErrorToast(e)
                     finish()
diff --git a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt
index 2d879eba..4eb34cb6 100644
--- a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/adapters/ItemsAdapter.kt
@@ -315,7 +315,7 @@ class ItemsAdapter(activity: SimpleActivity, var listItems: MutableList<ListItem
 
     private fun copyPath() {
         val clip = ClipData.newPlainText(activity.getString(R.string.app_name), getFirstSelectedItemPath())
-        (activity.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).primaryClip = clip
+        (activity.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager).setPrimaryClip(clip)
         finishActMode()
         activity.toast(R.string.path_copied)
     }
diff --git a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/fragments/ItemsFragment.kt b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/fragments/ItemsFragment.kt
index 3c5811a2..c924a6d1 100644
--- a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/fragments/ItemsFragment.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/fragments/ItemsFragment.kt
@@ -71,7 +71,7 @@ class ItemsFragment : Fragment(), ItemOperationsListener, Breadcrumbs.Breadcrumb
     override fun onViewStateRestored(savedInstanceState: Bundle?) {
         super.onViewStateRestored(savedInstanceState)
         if (savedInstanceState != null) {
-            currentPath = savedInstanceState.getString(PATH)
+            currentPath = savedInstanceState.getString(PATH)!!
             storedItems.clear()
         }
     }
diff --git a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Config.kt b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Config.kt
index ae47cb47..90973baa 100644
--- a/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Config.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Config.kt
@@ -22,7 +22,7 @@ class Config(context: Context) : BaseConfig(context) {
 
     var homeFolder: String
         get(): String {
-            var path = prefs.getString(HOME_FOLDER, "")
+            var path = prefs.getString(HOME_FOLDER, "")!!
             if (path.isEmpty() || !File(path).isDirectory) {
                 path = context.getInternalStoragePath()
                 homeFolder = path
@@ -59,7 +59,7 @@ class Config(context: Context) : BaseConfig(context) {
     }
 
     var favorites: MutableSet<String>
-        get() = prefs.getStringSet(FAVORITES, HashSet<String>())
+        get() = prefs.getStringSet(FAVORITES, HashSet<String>())!!
         set(favorites) = prefs.edit().remove(FAVORITES).putStringSet(FAVORITES, favorites).apply()
 
     fun saveFolderSorting(path: String, value: Int) {
diff --git a/build.gradle b/build.gradle
index d28a976a..684c611c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.3.61'
 
     repositories {
         google()