diff --git a/pom.xml b/pom.xml
index b2c18c0b..56e2545f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,8 +44,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>3.8.1</version>
 				<configuration>
-					<source>1.8</source>
-					<target>1.8</target>
+					<source>9</source>
+					<target>9</target>
 					<encoding>UTF-8</encoding>
 					<compilerArgument>-proc:none</compilerArgument>
 				</configuration>
@@ -140,7 +140,7 @@
 		<dependency>
 			<groupId>io.lumine</groupId>
 			<artifactId>MythicLib-dist</artifactId>
-			<version>1.3-R20-SNAPSHOT</version>
+			<version>1.3-R21-SNAPSHOT</version>
 			<scope>provided</scope>
 		</dependency>
 
diff --git a/src/main/java/net/Indyuce/mmocore/MMOCore.java b/src/main/java/net/Indyuce/mmocore/MMOCore.java
index d283f016..bd186966 100644
--- a/src/main/java/net/Indyuce/mmocore/MMOCore.java
+++ b/src/main/java/net/Indyuce/mmocore/MMOCore.java
@@ -101,7 +101,7 @@ public class MMOCore extends LuminePlugin {
 
 	public boolean shouldDebugSQL = false;
 
-	private static final int MYTHICLIB_COMPATIBILITY_INDEX = 3;
+	private static final int MYTHICLIB_COMPATIBILITY_INDEX = 4;
 
 	public MMOCore() {
 		plugin = this;
@@ -362,7 +362,6 @@ public class MMOCore extends LuminePlugin {
 
 		// Clear spawned loot chests
 		lootChests.getActive().forEach(chest -> chest.unregister(false));
-
 	}
 
 	/**
diff --git a/src/main/java/net/Indyuce/mmocore/api/player/PlayerData.java b/src/main/java/net/Indyuce/mmocore/api/player/PlayerData.java
index 4d39884a..c7842b85 100644
--- a/src/main/java/net/Indyuce/mmocore/api/player/PlayerData.java
+++ b/src/main/java/net/Indyuce/mmocore/api/player/PlayerData.java
@@ -246,20 +246,18 @@ public class PlayerData extends OfflinePlayerData implements Closable, Experienc
 
     @Override
     public int getClaims(ExperienceObject object, ExperienceTable table, ExperienceItem item) {
-        String key = object.geyKey() + "." + table.getId() + "." + item.getId();
+        String key = object.getKey() + "." + table.getId() + "." + item.getId();
         return tableItemClaims.get(key);
     }
 
     @Override
     public void setClaims(ExperienceObject object, ExperienceTable table, ExperienceItem item, int times) {
-        String key = object.geyKey() + "." + table.getId() + "." + item.getId();
+        String key = object.getKey() + "." + table.getId() + "." + item.getId();
         tableItemClaims.put(key, times);
     }
 
-    @Deprecated(since = "1.9")
-    public void setProfessionExpItemClaims(String professionTableItemKey, int times) {
-        Validate.isTrue(!professionTableItemKey.startsWith("class.") && !professionTableItemKey.startsWith("profession."), "Invalid exp item key");
-        tableItemClaims.put("profession." + professionTableItemKey, times);
+    public Map<String, Integer> getItemClaims() {
+        return tableItemClaims;
     }
 
     /**
diff --git a/src/main/java/net/Indyuce/mmocore/api/player/profess/PlayerClass.java b/src/main/java/net/Indyuce/mmocore/api/player/profess/PlayerClass.java
index 76762b1a..d6b1fc20 100644
--- a/src/main/java/net/Indyuce/mmocore/api/player/profess/PlayerClass.java
+++ b/src/main/java/net/Indyuce/mmocore/api/player/profess/PlayerClass.java
@@ -218,7 +218,7 @@ public class PlayerClass extends PostLoadObject implements ExperienceObject {
     }
 
     @Override
-    public String geyKey() {
+    public String getKey() {
         return "class." + getId();
     }
 
diff --git a/src/main/java/net/Indyuce/mmocore/experience/ExperienceObject.java b/src/main/java/net/Indyuce/mmocore/experience/ExperienceObject.java
index c0e82e7e..e57a64bb 100644
--- a/src/main/java/net/Indyuce/mmocore/experience/ExperienceObject.java
+++ b/src/main/java/net/Indyuce/mmocore/experience/ExperienceObject.java
@@ -11,7 +11,7 @@ import javax.annotation.Nullable;
  */
 public interface ExperienceObject {
 
-    String geyKey();
+    String getKey();
 
     /**
      * Indicates the amount of exp required to level up
diff --git a/src/main/java/net/Indyuce/mmocore/skill/list/Sneaky_Picky.java b/src/main/java/net/Indyuce/mmocore/skill/list/Sneaky_Picky.java
index 266d1f52..eeb3b1e3 100644
--- a/src/main/java/net/Indyuce/mmocore/skill/list/Sneaky_Picky.java
+++ b/src/main/java/net/Indyuce/mmocore/skill/list/Sneaky_Picky.java
@@ -30,7 +30,7 @@ public class Sneaky_Picky extends SkillHandler<SimpleSkillResult> implements Lis
     @Override
     public void whenCast(SimpleSkillResult result, SkillMetadata skillMeta) {
         LivingEntity target = (LivingEntity) skillMeta.getTargetEntity();
-        skillMeta.getAttack().getDamage().multiply(1 + skillMeta.getModifier("extra") / 100, DamageType.WEAPON);
+        skillMeta.getAttack().getDamage().multiplicativeModifier(1 + skillMeta.getModifier("extra") / 100, DamageType.WEAPON);
         target.getWorld().spawnParticle(Particle.SMOKE_NORMAL, target.getLocation().add(0, target.getHeight() / 2, 0), 64, 0, 0, 0, .05);
         target.getWorld().playSound(target.getLocation(), Sound.ENTITY_ZOMBIE_ATTACK_IRON_DOOR, 1, 2);
     }