diff --git a/.gitignore b/.gitignore
index 55d58e37f5..50e006fdc9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,6 +52,9 @@ captures/
 .idea/navEditor.xml
 .idea/workspace.xml
 .idea/deploymentTargetSelector.xml
+.idea/other.xml
+
+.kotlin
 
 # Keystore files
 *.jks
diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 148fdd2469..6d0ee1c2a9 100644
--- a/.idea/kotlinc.xml
+++ b/.idea/kotlinc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="KotlinJpsPluginSettings">
-    <option name="version" value="1.9.24" />
+    <option name="version" value="2.0.0" />
   </component>
 </project>
\ No newline at end of file
diff --git a/build.gradle b/build.gradle
index 3e92890587..bfb2587d10 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,11 +1,11 @@
 buildscript {
-    ext.kotlin_version = '1.9.24'
+    ext.kotlin_version = '2.0.0'
     repositories {
         mavenCentral()
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:8.4.1'
+        classpath 'com.android.tools.build:gradle:8.5.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }
diff --git a/gradle.properties b/gradle.properties
index f6238a6cb2..96ce217402 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -11,7 +11,8 @@
 # SPDX-License-Identifier: EPL-2.0
 #
 
-android.enableJetifier=true
+android.enableJetifier=false
 android.nonFinalResIds=false
 android.nonTransitiveRClass=false
 android.useAndroidX=true
+org.gradle.configuration-cache=true
diff --git a/mobile/src/main/java/org/openhab/habdroid/background/BackgroundTasksManager.kt b/mobile/src/main/java/org/openhab/habdroid/background/BackgroundTasksManager.kt
index 918e223f52..0054343441 100644
--- a/mobile/src/main/java/org/openhab/habdroid/background/BackgroundTasksManager.kt
+++ b/mobile/src/main/java/org/openhab/habdroid/background/BackgroundTasksManager.kt
@@ -37,7 +37,6 @@ import android.os.Parcelable
 import android.speech.RecognizerIntent
 import android.telephony.TelephonyManager
 import android.util.Log
-import androidx.annotation.RequiresApi
 import androidx.annotation.StringRes
 import androidx.core.app.NotificationCompat
 import androidx.core.content.ContextCompat
@@ -810,17 +809,20 @@ class BackgroundTasksManager : BroadcastReceiver() {
                 }
                 ItemUpdateWorker.ValueWithInfo(ssidToSend)
             }
-            @RequiresApi(Build.VERSION_CODES.M)
             VALUE_GETTER_MAP[PrefKeys.SEND_DND_MODE] = { context, _ ->
-                val nm = context.getSystemService(NOTIFICATION_SERVICE) as NotificationManager
-                val mode = when (nm.currentInterruptionFilter) {
-                    NotificationManager.INTERRUPTION_FILTER_NONE -> "TOTAL_SILENCE"
-                    NotificationManager.INTERRUPTION_FILTER_PRIORITY -> "PRIORITY"
-                    NotificationManager.INTERRUPTION_FILTER_ALARMS -> "ALARMS"
-                    NotificationManager.INTERRUPTION_FILTER_ALL -> "OFF"
-                    else -> "UNDEF"
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                    val nm = context.getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+                    val mode = when (nm.currentInterruptionFilter) {
+                        NotificationManager.INTERRUPTION_FILTER_NONE -> "TOTAL_SILENCE"
+                        NotificationManager.INTERRUPTION_FILTER_PRIORITY -> "PRIORITY"
+                        NotificationManager.INTERRUPTION_FILTER_ALARMS -> "ALARMS"
+                        NotificationManager.INTERRUPTION_FILTER_ALL -> "OFF"
+                        else -> "UNDEF"
+                    }
+                    ItemUpdateWorker.ValueWithInfo(mode)
+                } else {
+                    ItemUpdateWorker.ValueWithInfo("UNDEF")
                 }
-                ItemUpdateWorker.ValueWithInfo(mode)
             }
             VALUE_GETTER_MAP[PrefKeys.SEND_BLUETOOTH_DEVICES] = { context, _ ->
                 fun BluetoothDevice.isConnected(): Boolean {