diff --git a/build.gradle.kts b/build.gradle.kts
index bb2f4f0..abcfe7f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,16 +8,17 @@ plugins {
     id("com.github.johnrengelman.shadow").version("6.1.0")
 }
 group = "nfsprodriver"
-version = "1.4"
+version = "1.5"
 repositories {
     mavenCentral()
-    maven("https://papermc.io/repo/repository/maven-public/")
+    maven("https://hub.spigotmc.org/nexus/content/repositories/snapshots/")
+    maven("https://oss.sonatype.org/content/repositories/snapshots")
+    maven("https://oss.sonatype.org/content/repositories/central")
 }
 dependencies {
     val kotlinVersion: String by System.getProperties()
     implementation(kotlin("stdlib", kotlinVersion))
-    //https://papermc.io/javadocs/paper/1.16/overview-summary.html
-    compileOnly("com.destroystokyo.paper", "paper-api", "1.16.5-R0.1-SNAPSHOT")
+    compileOnly("org.spigotmc:spigot-api:1.17-R0.1-SNAPSHOT")
 }
 val autoRelocate by tasks.register<ConfigureShadowRelocation>("configureShadowRelocation", ConfigureShadowRelocation::class) {
     target = tasks.getByName("shadowJar") as ShadowJar?
@@ -37,7 +38,7 @@ tasks {
     }
     withType<KotlinCompile> {
         kotlinOptions {
-            jvmTarget = "1.8"
+            jvmTarget = "16"
         }
     }
 }
diff --git a/gradle.properties b/gradle.properties
index fa1f2f7..4a8fc03 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,2 @@
 kotlin.code.style=official
-systemProp.kotlinVersion=1.4.30
+systemProp.kotlinVersion=1.5.10
diff --git a/src/main/kotlin/BeaconRange.kt b/src/main/kotlin/BeaconRange.kt
index 2f20006..881c277 100644
--- a/src/main/kotlin/BeaconRange.kt
+++ b/src/main/kotlin/BeaconRange.kt
@@ -4,8 +4,6 @@ import org.bukkit.Material
 import org.bukkit.NamespacedKey
 import org.bukkit.block.Beacon
 import org.bukkit.block.Block
-import org.bukkit.block.BlockState
-import org.bukkit.enchantments.Enchantment
 import org.bukkit.entity.*
 import org.bukkit.inventory.Inventory
 import org.bukkit.plugin.java.JavaPlugin
@@ -14,7 +12,6 @@ import org.bukkit.potion.PotionEffectType
 import org.bukkit.inventory.ShapedRecipe
 
 import org.bukkit.inventory.ItemStack
-import java.util.function.Predicate
 
 
 class BeaconRange : JavaPlugin(){
@@ -34,16 +31,10 @@ class BeaconRange : JavaPlugin(){
         remSSRecipe()
     }
 
-    private fun generateConfig() {
-
-    }
-
     private fun addSSRecipe() {
         val superStar = ItemStack(Material.NETHER_STAR)
-        val ssMeta = superStar.itemMeta
-        ssMeta.setDisplayName("Super Star (enabled)")
-        superStar.setItemMeta(ssMeta)
-        superStar.lore = listOf("No effects")
+        superStar.itemMeta?.setDisplayName("Super Star (enabled)")
+        superStar.itemMeta?.lore = listOf("No effects")
         val superStarRec = ShapedRecipe(NamespacedKey(this, "superStar"), superStar)
         superStarRec.shape("SSS", "SSS", "SSS")
         superStarRec.setIngredient('S', Material.NETHER_STAR)
@@ -110,7 +101,7 @@ class BeaconRange : JavaPlugin(){
                 beaconEffects.forEach { (beaconEffectType, beaconEffectAmp) ->
                     val inv: Inventory = player.inventory
                     val stars: List<ItemStack> = inv.contents.filter { itemStack -> itemStack?.itemMeta?.displayName?.contains("Super Star") == true }
-                    if (stars.isEmpty() || stars.first().itemMeta.displayName.contains("enabled")) {
+                    if (stars.isEmpty() || stars.first().itemMeta?.displayName?.contains("enabled") == true) {
                         val effect = PotionEffect(beaconEffectType, duration, minOf(beaconEffectAmp, config.getInt("maxAmp").minus(1)))
                         player.addPotionEffect(effect)
                     }
@@ -166,7 +157,7 @@ class BeaconRange : JavaPlugin(){
                 beaconEffects.forEach { beaconEffect ->
                     lore.add(beaconEffect.key.name+": "+beaconEffect.value.toString())
                 }
-                inv.itemInOffHand.lore = lore
+                inv.itemInOffHand.itemMeta?.lore = lore
             }
         }
     }
@@ -180,7 +171,7 @@ class BeaconRange : JavaPlugin(){
         val inv = player.inventory
         val itemName: String? = inv.itemInOffHand.itemMeta?.displayName
         if (itemName != null && itemName.contains("Super Star") && itemName.contains("enabled")) {
-            inv.itemInOffHand.lore?.forEach { starEffect ->
+            inv.itemInOffHand.itemMeta?.lore?.forEach { starEffect ->
                 val split: List<String> = starEffect.split(": ")
                 if (split.count() == 2) {
                     val effectType: PotionEffectType = PotionEffectType.getByName(split[0])!!
diff --git a/src/main/kotlin/events/RightClick.kt b/src/main/kotlin/events/RightClick.kt
index 31d179a..85c06f7 100644
--- a/src/main/kotlin/events/RightClick.kt
+++ b/src/main/kotlin/events/RightClick.kt
@@ -15,7 +15,7 @@ class RightClick : Listener {
             val itemName: String? = inv.itemInMainHand.itemMeta?.displayName
             if (itemName != null) {
                 if(itemName.contains("Super Star")) {
-                    val meta: ItemMeta = inv.itemInMainHand.itemMeta
+                    val meta: ItemMeta = inv.itemInMainHand.itemMeta!!
                     if (itemName.contains("enabled")) {
                         meta.setDisplayName("Super Star (disabled)")
                     } else {
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 2a75990..6c09eb9 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -1,6 +1,6 @@
 main: BeaconRange
 name: BeaconRange
-version: 1.4
-api-version: "1.16"
+version: 1.5
+api-version: "1.17"
 author: Bjarne Roß
 description: Extend the range of your beacons!