diff --git a/app/build.gradle b/app/build.gradle
index 9b7642e..843eef0 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -2,11 +2,11 @@ apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
     defaultConfig {
         applicationId "com.welie.blessedexample"
         minSdkVersion 26
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -30,12 +30,12 @@ android {
 
 dependencies {
     implementation fileTree(include: ['*.jar'], dir: 'libs')
-    implementation 'androidx.appcompat:appcompat:1.2.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
     implementation 'com.jakewharton.timber:timber:4.7.1'
     implementation project(':blessed')
     testImplementation 'junit:junit:4.13.2'
-    implementation "androidx.core:core-ktx:+"
+    implementation "androidx.core:core-ktx:1.5.0"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.3-native-mt"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.3-native-mt"
diff --git a/blessed/build.gradle b/blessed/build.gradle
index 0282701..0055730 100644
--- a/blessed/build.gradle
+++ b/blessed/build.gradle
@@ -2,11 +2,11 @@ apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdkVersion 29
+    compileSdkVersion 30
 
     defaultConfig {
         minSdkVersion 26
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
 
@@ -37,7 +37,7 @@ dependencies {
     testImplementation "org.robolectric:robolectric:4.5.1"
     testImplementation "org.mockito:mockito-core:3.8.0"
     testImplementation 'androidx.test:core:1.3.0'
-    implementation "androidx.core:core-ktx:+"
+    implementation "androidx.core:core-ktx:1.5.0"
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.4.3-native-mt"
     implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.3-native-mt"
diff --git a/blessed/src/main/java/com/welie/blessed/BluetoothCentralManager.kt b/blessed/src/main/java/com/welie/blessed/BluetoothCentralManager.kt
index 15d62e2..c00db52 100644
--- a/blessed/src/main/java/com/welie/blessed/BluetoothCentralManager.kt
+++ b/blessed/src/main/java/com/welie/blessed/BluetoothCentralManager.kt
@@ -80,7 +80,7 @@ class BluetoothCentralManager(private val context: Context) {
             synchronized(this) {
                 val deviceName = result.device.name ?: return
                 for (name in scanPeripheralNames) {
-                    if (deviceName.contains(name!!)) {
+                    if (deviceName.contains(name)) {
                         sendScanResult(result)
                         return
                     }
@@ -534,7 +534,6 @@ class BluetoothCentralManager(private val context: Context) {
             stopAutoconnectScan()
             Timber.d("cancelling autoconnect for %s", peripheralAddress)
             scope.launch { resultCentralManagerCallback.onDisconnectedPeripheral(peripheral, HciStatus.SUCCESS) }
-           // scope.launch { connectionStateCallback.invoke(peripheral, ConnectionState.DISCONNECTED) }
 
             // If there are any devices left, restart the reconnection scan
             if (reconnectPeripheralAddresses.size > 0) {
@@ -916,7 +915,7 @@ class BluetoothCentralManager(private val context: Context) {
         private const val NO_VALID_PERIPHERAL_PROVIDED = "no valid peripheral provided"
         private const val NO_VALID_PERIPHERAL_CALLBACK_SPECIFIED = "no valid peripheral callback specified"
     }
-    //endregion
+
     /**
      * Construct a new BluetoothCentralManager object
      *
diff --git a/build.gradle b/build.gradle
index e690aa6..4e4e168 100644
--- a/build.gradle
+++ b/build.gradle
@@ -8,7 +8,7 @@ buildscript {
         
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.1.2'
+        classpath 'com.android.tools.build:gradle:4.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 0a328bf..0c0499c 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip