diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
index 7e340a7..8d81632 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="1.6.21" />
+    <option name="version" value="1.9.22" />
   </component>
 </project>
\ No newline at end of file
diff --git a/app/build.gradle b/app/build.gradle
index 7e4612d..419eb0a 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -3,11 +3,11 @@ apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 
 android {
-    compileSdk 29
+    compileSdk 30
     defaultConfig {
         applicationId "foss.cnugteren.nlweer"
         minSdkVersion 21
-        targetSdkVersion 29
+        targetSdkVersion 30
         versionCode 11
         versionName "1.9.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -19,13 +19,16 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility = 1.8
-        targetCompatibility = 1.8
+        sourceCompatibility = JavaVersion.VERSION_17
+        targetCompatibility = JavaVersion.VERSION_17
     }
     buildFeatures {
         viewBinding = true
         buildConfig = true
     }
+    kotlinOptions {
+        jvmTarget = '17'
+    }
 
     namespace 'foss.cnugteren.nlweer'
 }
diff --git a/build.gradle b/build.gradle
index c52ab97..3d21bff 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 = '1.6.21'
+    ext.kotlin_version = '1.9.22'
     repositories {
         google()
         mavenCentral()