diff --git a/base/command/pom.xml b/base/command/pom.xml
index c9e5884..9a40a5f 100644
--- a/base/command/pom.xml
+++ b/base/command/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/base/command/src/main/java/cc/carm/lib/easyplugin/command/CommandHandler.java b/base/command/src/main/java/cc/carm/lib/easyplugin/command/CommandHandler.java
index e7d1891..4cc53e5 100644
--- a/base/command/src/main/java/cc/carm/lib/easyplugin/command/CommandHandler.java
+++ b/base/command/src/main/java/cc/carm/lib/easyplugin/command/CommandHandler.java
@@ -38,7 +38,9 @@ public abstract class CommandHandler implements TabExecutor, NamedExecutor {
 
     public abstract void noArgs(CommandSender sender);
 
-    public abstract void unknownCommand(CommandSender sender, String[] args);
+    public void unknownCommand(CommandSender sender, String[] args) {
+        noArgs(sender);
+    }
 
     public abstract void noPermission(CommandSender sender);
 
diff --git a/base/command/src/main/java/cc/carm/lib/easyplugin/command/SimpleCompleter.java b/base/command/src/main/java/cc/carm/lib/easyplugin/command/SimpleCompleter.java
index cc418f3..d0cb6f7 100644
--- a/base/command/src/main/java/cc/carm/lib/easyplugin/command/SimpleCompleter.java
+++ b/base/command/src/main/java/cc/carm/lib/easyplugin/command/SimpleCompleter.java
@@ -1,15 +1,18 @@
 package cc.carm.lib.easyplugin.command;
 
+import com.google.common.collect.ImmutableList;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.World;
+import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.HumanEntity;
 import org.bukkit.potion.PotionEffectType;
 import org.bukkit.util.StringUtil;
 import org.jetbrains.annotations.NotNull;
 
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
@@ -17,14 +20,22 @@ import java.util.stream.Stream;
 
 public class SimpleCompleter {
 
-    public static @NotNull List<String> objects(@NotNull String input, List<?> objects) {
+    public static @NotNull List<String> none() {
+        return ImmutableList.of();
+    }
+
+    public static @NotNull List<String> objects(@NotNull String input, Collection<?> objects) {
         return objects(input, objects.size(), objects);
     }
 
-    public static @NotNull List<String> objects(@NotNull String input, int limit, List<?> objects) {
+    public static @NotNull List<String> objects(@NotNull String input, int limit, Collection<?> objects) {
         return objects(input, limit, objects.stream());
     }
 
+    public static @NotNull List<String> objects(@NotNull String input, Stream<?> stream) {
+        return objects(input, 20, stream);
+    }
+
     public static @NotNull List<String> objects(@NotNull String input, int limit, Stream<?> stream) {
         return stream.filter(Objects::nonNull).map(Object::toString)
                 .filter(s -> StringUtil.startsWithIgnoreCase(s, input))
@@ -39,11 +50,11 @@ public class SimpleCompleter {
         return text(input, limit, Arrays.asList(texts));
     }
 
-    public static @NotNull List<String> text(@NotNull String input, List<String> texts) {
+    public static @NotNull List<String> text(@NotNull String input, Collection<String> texts) {
         return text(input, texts.size(), texts);
     }
 
-    public static @NotNull List<String> text(@NotNull String input, int limit, List<String> texts) {
+    public static @NotNull List<String> text(@NotNull String input, int limit, Collection<String> texts) {
         return objects(input, limit, texts);
     }
 
@@ -87,4 +98,13 @@ public class SimpleCompleter {
         return objects(input, limit, Arrays.stream(PotionEffectType.values()).map(PotionEffectType::getName));
     }
 
+    public static @NotNull List<String> enchantments(@NotNull String input) {
+        return effects(input, 10);
+    }
+
+    @SuppressWarnings("deprecation")
+    public static @NotNull List<String> enchantments(@NotNull String input, int limit) {
+        return objects(input, limit, Arrays.stream(Enchantment.values()).map(Enchantment::getName));
+    }
+
 }
diff --git a/base/gui/pom.xml b/base/gui/pom.xml
index e050da1..a54e28e 100644
--- a/base/gui/pom.xml
+++ b/base/gui/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/base/main/pom.xml b/base/main/pom.xml
index 8e7960c..558ef0c 100644
--- a/base/main/pom.xml
+++ b/base/main/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/base/storage/pom.xml b/base/storage/pom.xml
index 3f34791..a2bd13f 100644
--- a/base/storage/pom.xml
+++ b/base/storage/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/collection/all/pom.xml b/collection/all/pom.xml
index 51e3168..dad97ea 100644
--- a/collection/all/pom.xml
+++ b/collection/all/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/collection/bom/pom.xml b/collection/bom/pom.xml
index 13514e6..7c879c4 100644
--- a/collection/bom/pom.xml
+++ b/collection/bom/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/collection/common/pom.xml b/collection/common/pom.xml
index 3f59430..686c895 100644
--- a/collection/common/pom.xml
+++ b/collection/common/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extension/gh-checker/pom.xml b/extension/gh-checker/pom.xml
index 4f975b5..835f691 100644
--- a/extension/gh-checker/pom.xml
+++ b/extension/gh-checker/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extension/papi/pom.xml b/extension/papi/pom.xml
index d71fe58..089a0e0 100644
--- a/extension/papi/pom.xml
+++ b/extension/papi/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/extension/vault/pom.xml b/extension/vault/pom.xml
index f4b2050..2a8a958 100644
--- a/extension/vault/pom.xml
+++ b/extension/vault/pom.xml
@@ -5,7 +5,7 @@
     <parent>
         <artifactId>easyplugin-parent</artifactId>
         <groupId>cc.carm.lib</groupId>
-        <version>1.4.8</version>
+        <version>1.4.9</version>
         <relativePath>../../pom.xml</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/pom.xml b/pom.xml
index c35de5b..83c0214 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,7 +15,7 @@
     <groupId>cc.carm.lib</groupId>
     <artifactId>easyplugin-parent</artifactId>
     <packaging>pom</packaging>
-    <version>1.4.8</version>
+    <version>1.4.9</version>
     <modules>
 
         <module>base/main</module>