diff --git a/build.gradle.kts b/build.gradle.kts
index b5805d97..3c86daa0 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ plugins {
 }
 
 buildscript {
-    val kotlinVersion = "1.3.72"
+    val kotlinVersion = "1.4.0"
     extra.set("kotlinVersion", kotlinVersion)
 
     repositories {
diff --git a/detekt.yml b/detekt.yml
index aed2bb8e..86953877 100644
--- a/detekt.yml
+++ b/detekt.yml
@@ -248,10 +248,8 @@ formatting:
     autoCorrect: true
   SpacingBetweenDeclarationsWithAnnotations:
     active: false
-    autoCorrect: true
   SpacingBetweenDeclarationsWithComments:
     active: false
-    autoCorrect: true
   StringTemplate:
     active: true
     autoCorrect: true
diff --git a/mobile/build.gradle.kts b/mobile/build.gradle.kts
index 589d1cbc..2f055639 100644
--- a/mobile/build.gradle.kts
+++ b/mobile/build.gradle.kts
@@ -11,7 +11,7 @@ plugins {
 android {
     val javaVersion = JavaVersion.VERSION_1_8
     val targetSdk = 29
-    buildToolsVersion("30.0.1")
+    buildToolsVersion("30.0.2")
     compileOptions {
         isCoreLibraryDesugaringEnabled = true
         sourceCompatibility = javaVersion
@@ -94,7 +94,7 @@ dependencies {
     implementation("com.linkedin.dexmaker:dexmaker:2.28.0")
     implementation("com.takisoft.preferencex:preferencex-simplemenu:1.1.0")
     implementation("org.jetbrains.kotlinx:kotlinx-collections-immutable:0.3.2")
-    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.8")
+    implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.9")
     testImplementation("junit:junit:4.13")
     androidTestImplementation("androidx.room:room-testing:$roomVersion")
     androidTestImplementation("androidx.test:runner:1.2.0")
diff --git a/mobile/src/main/java/be/mygod/librootkotlinx/RootServer.kt b/mobile/src/main/java/be/mygod/librootkotlinx/RootServer.kt
index dee418cc..d6df27e1 100644
--- a/mobile/src/main/java/be/mygod/librootkotlinx/RootServer.kt
+++ b/mobile/src/main/java/be/mygod/librootkotlinx/RootServer.kt
@@ -441,7 +441,8 @@ class RootServer {
                                 val result = command.execute();
                                 { output.pushResult(callback, result) }
                             } catch (e: Throwable) {
-                                { output.pushThrowable(callback, e) }
+                                val worker = { output.pushThrowable(callback, e) }
+                                worker
                             } finally {
                                 cancellables.remove(callback)
                             }
@@ -463,7 +464,8 @@ class RootServer {
                                 output.flush()
                             }
                         } catch (e: Throwable) {
-                            { output.pushThrowable(callback, e) }
+                            val worker = { output.pushThrowable(callback, e) }
+                            worker
                         } finally {
                             cancellables.remove(callback)
                         }
diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/manage/TetherManager.kt b/mobile/src/main/java/be/mygod/vpnhotspot/manage/TetherManager.kt
index 2e10aa1c..bec59e21 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/manage/TetherManager.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/manage/TetherManager.kt
@@ -195,7 +195,6 @@ sealed class TetherManager(protected val parent: TetheringFragment) : Manager(),
                         var features = supportedFeatures
                         if (features == 0L) yield(parent.getString(R.string.tethering_manage_wifi_no_features))
                         else while (features != 0L) {
-                            @OptIn(ExperimentalStdlibApi::class)
                             val bit = features.takeLowestOneBit()
                             yield(WifiApManager.featureLookup(bit, true))
                             features = features and bit.inv()
diff --git a/mobile/src/main/java/be/mygod/vpnhotspot/root/WifiApCommands.kt b/mobile/src/main/java/be/mygod/vpnhotspot/root/WifiApCommands.kt
index d8887991..f1bf27f6 100644
--- a/mobile/src/main/java/be/mygod/vpnhotspot/root/WifiApCommands.kt
+++ b/mobile/src/main/java/be/mygod/vpnhotspot/root/WifiApCommands.kt
@@ -63,7 +63,7 @@ object WifiApCommands {
     @Parcelize
     @RequiresApi(28)
     class RegisterSoftApCallback : RootCommandChannel<SoftApCallbackParcel> {
-        override fun create(scope: CoroutineScope) = scope.produce(capacity = capacity) {
+        override fun create(scope: CoroutineScope) = scope.produce<SoftApCallbackParcel>(capacity = capacity) {
             val finish = CompletableDeferred<Unit>()
             val key = WifiApManager.registerSoftApCallback(object : WifiApManager.SoftApCallbackCompat {
                 private fun push(parcel: SoftApCallbackParcel) = check(try {