diff --git a/build.gradle b/build.gradle
index ce661c4..39c59bf 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ plugins {
 }
 
 group 'sh.okx'
-version '3.4'
+version '3.4.1'
 
 repositories {
     mavenCentral()
diff --git a/src/main/java/sh/okx/rankup/Rankup.java b/src/main/java/sh/okx/rankup/Rankup.java
index 5d27bfd..c5e9181 100644
--- a/src/main/java/sh/okx/rankup/Rankup.java
+++ b/src/main/java/sh/okx/rankup/Rankup.java
@@ -1,6 +1,5 @@
 package sh.okx.rankup;
 
-import com.gmail.nossr50.datatypes.skills.PrimarySkillType;
 import lombok.Getter;
 import net.milkbowl.vault.economy.Economy;
 import net.milkbowl.vault.permission.Permission;
@@ -47,6 +46,7 @@ import sh.okx.rankup.requirements.requirement.advancedachievements.AdvancedAchie
 import sh.okx.rankup.requirements.requirement.advancedachievements.AdvancedAchievementsTotalRequirement;
 import sh.okx.rankup.requirements.requirement.mcmmo.McMMOPowerLevelRequirement;
 import sh.okx.rankup.requirements.requirement.mcmmo.McMMOSkillRequirement;
+import sh.okx.rankup.requirements.requirement.mcmmo.McMMOSkillUtil;
 
 import java.io.File;
 import java.text.DecimalFormat;
@@ -219,14 +219,16 @@ public class Rankup extends JavaPlugin {
 
   private void registerRequirements() {
     requirementRegistry = new RequirementRegistry();
-    requirementRegistry.addRequirement(new MoneyRequirement(this));
+    if (economy != null) {
+      requirementRegistry.addRequirement(new MoneyRequirement(this));
+    }
     requirementRegistry.addRequirement(new XpLevelRequirement(this));
     requirementRegistry.addRequirement(new PlaytimeMinutesRequirement(this));
     requirementRegistry.addRequirement(new GroupRequirement(this));
     requirementRegistry.addRequirement(new PermissionRequirement(this));
     requirementRegistry.addRequirement(new PlaceholderRequirement(this));
     if (Bukkit.getPluginManager().isPluginEnabled("mcMMO")) {
-      for (PrimarySkillType skill : PrimarySkillType.values()) {
+      for (String skill : McMMOSkillUtil.getInstance().getSkills()) {
         requirementRegistry.addRequirement(new McMMOSkillRequirement(this, skill));
       }
       requirementRegistry.addRequirement(new McMMOPowerLevelRequirement(this));
diff --git a/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillRequirement.java b/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillRequirement.java
index 9b809c9..a0bcd0c 100644
--- a/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillRequirement.java
+++ b/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillRequirement.java
@@ -1,16 +1,14 @@
 package sh.okx.rankup.requirements.requirement.mcmmo;
 
-import com.gmail.nossr50.datatypes.skills.PrimarySkillType;
-import com.gmail.nossr50.util.player.UserManager;
 import org.bukkit.entity.Player;
 import sh.okx.rankup.Rankup;
 import sh.okx.rankup.requirements.Requirement;
 
 public class McMMOSkillRequirement extends Requirement {
-  private PrimarySkillType skill;
+  private String skill;
 
-  public McMMOSkillRequirement(Rankup plugin, PrimarySkillType skill) {
-    super(plugin, "mcmmo-" + skill.toString().toLowerCase());
+  public McMMOSkillRequirement(Rankup plugin, String skill) {
+    super(plugin, "mcmmo-" + skill.toLowerCase());
     this.skill = skill;
   }
 
@@ -26,7 +24,7 @@ public class McMMOSkillRequirement extends Requirement {
 
   @Override
   public double getRemaining(Player player) {
-    return Math.max(0, getValueInt() - UserManager.getPlayer(player).getSkillLevel(skill));
+    return Math.max(0, getValueInt() - McMMOSkillUtil.getInstance().getSkillLevel(player, skill));
   }
 
   @Override
diff --git a/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillUtil.java b/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillUtil.java
new file mode 100644
index 0000000..78237af
--- /dev/null
+++ b/src/main/java/sh/okx/rankup/requirements/requirement/mcmmo/McMMOSkillUtil.java
@@ -0,0 +1,90 @@
+package sh.okx.rankup.requirements.requirement.mcmmo;
+
+import com.gmail.nossr50.datatypes.player.McMMOPlayer;
+import com.gmail.nossr50.util.player.UserManager;
+import org.bukkit.entity.Player;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+/**
+ * Because mcMMO like changing the name of their skill types.
+ * Singleton (not thread safe!) class to access different mcMMO versions.
+ */
+public class McMMOSkillUtil {
+  private static McMMOSkillUtil instance;
+
+  private Class<?> skillTypeClass;
+  private Method values;
+  private Method valueOf;
+  //private Class<?> userManagerClass;
+  private Method getSkillLevel;
+
+  private McMMOSkillUtil() {
+    final String pckg = "com.gmail.nossr50.datatypes.skills.";
+    try {
+      skillTypeClass = Class.forName(pckg + "PrimarySkillType");
+    } catch (ClassNotFoundException e0) {
+      try {
+        skillTypeClass = Class.forName(pckg + "PrimarySkill");
+      } catch (ClassNotFoundException e1) {
+        try {
+          skillTypeClass = Class.forName(pckg + "SkillType");
+        } catch (ClassNotFoundException e2) {
+          throw new RuntimeException("mcMMO Skill Type class not found");
+        }
+      }
+    }
+    try {
+      values = skillTypeClass.getMethod("values");
+    } catch (NoSuchMethodException e) {
+      throw new RuntimeException("mcMMO " + skillTypeClass + ".values() not found");
+    }
+    try {
+      valueOf = skillTypeClass.getMethod("valueOf", String.class);
+    } catch (NoSuchMethodException e) {
+      throw new RuntimeException("mcMMO" + skillTypeClass + ".valueOf(String) not found");
+    }
+
+    /*try {
+      userManagerClass = Class.forName("com.gmail.nossr50.util.player.UserManager");
+    } catch (ClassNotFoundException e) {
+      throw new RuntimeException("mcMMO UserManager class not found");
+    }*/
+    try {
+      getSkillLevel = McMMOPlayer.class.getMethod("getSkillLevel", skillTypeClass);
+    } catch (NoSuchMethodException e) {
+      throw new RuntimeException("mcMMO UserManager.getSkillLevel(" + skillTypeClass + ") not found");
+    }
+  }
+
+  public static McMMOSkillUtil getInstance() {
+    if (instance == null) {
+      instance = new McMMOSkillUtil();
+    }
+    return instance;
+  }
+
+  public String[] getSkills() {
+    try {
+      Enum<?>[] skills = (Enum<?>[]) values.invoke(null);
+      String[] stringSkills = new String[skills.length];
+      for (int i = 0; i < skills.length; i++) {
+        stringSkills[i] = skills[i].name();
+      }
+      return stringSkills;
+    } catch (IllegalAccessException | InvocationTargetException e) {
+      throw new RuntimeException(e);
+    }
+  }
+
+  public int getSkillLevel(Player player, String skill) {
+    McMMOPlayer mcMMOPlayer = UserManager.getPlayer(player);
+    try {
+      Object skillType = skillTypeClass.cast(valueOf.invoke(null, skill));
+      return (int) getSkillLevel.invoke(mcMMOPlayer, skillType);
+    } catch (IllegalAccessException | InvocationTargetException e) {
+      throw new RuntimeException(e);
+    }
+  }
+}
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
index 519def3..e137490 100644
--- a/src/main/resources/plugin.yml
+++ b/src/main/resources/plugin.yml
@@ -1,5 +1,5 @@
 name: Rankup
-version: 3.4
+version: 3.4.1
 main: sh.okx.rankup.Rankup
 author: Okx
 depend: [Vault]