diff --git a/HMCL/build.gradle b/HMCL/build.gradle
index be25e3cfe4..d5c7d4f1ef 100755
--- a/HMCL/build.gradle
+++ b/HMCL/build.gradle
@@ -38,7 +38,7 @@ def buildnumber = System.getenv("TRAVIS_BUILD_NUMBER")
 if (buildnumber == null)
 buildnumber = System.getenv("BUILD_NUMBER")
 if (buildnumber == null)
-buildnumber = "51"
+buildnumber = "52"
     
 def versionroot = System.getenv("VERSION_ROOT")
 if (versionroot == null)
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Argument.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Argument.java
index 5e550348bc..6e0195c5c2 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Argument.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Argument.java
@@ -32,7 +32,7 @@ import java.util.Map;
  *
  * @author huang
  */
-public interface Argument {
+public interface Argument extends Cloneable {
 
     /**
      * Parse this argument in form: ${key name} or simply a string.
@@ -42,6 +42,8 @@ public interface Argument {
      * @return parsed argument element, empty if this argument is ignored and will not be added.
      */
     List<String> toString(Map<String, String> keys, Map<String, Boolean> features);
+    
+    public Object clone();
 
     public static class ArgumentSerializer implements JsonDeserializer<Argument>, JsonSerializer<Argument> {
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Arguments.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Arguments.java
index c9de41dc1e..72229aa5bf 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Arguments.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Arguments.java
@@ -18,11 +18,13 @@
 package org.jackhuang.hmcl.core.version;
 
 import com.google.gson.annotations.SerializedName;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import org.jackhuang.hmcl.util.ArrayUtils;
 import org.jackhuang.hmcl.util.CollectionUtils;
 
 /**
@@ -34,6 +36,25 @@ public class Arguments {
     public List<Argument> game;
     @SerializedName("jvm")
     public List<Argument> jvm;
+    
+    public static Arguments clone(Arguments original) {
+        if (original == null)
+            return null;
+        Arguments ret = new Arguments();
+        ret.game = CollectionUtils.deepCopy(original.game, value -> (Argument) value.clone());
+        ret.jvm = CollectionUtils.deepCopy(original.jvm, value -> (Argument) value.clone());
+        return ret;
+    }
+    
+    public static Arguments merge(Arguments a, Arguments b) {
+        if (a == null) return b;
+        else if (b == null) return a;
+        Arguments ret = new Arguments();
+        ret.game = ArrayUtils.merge(a.game, b.game);
+        ret.jvm = ArrayUtils.merge(a.jvm, b.jvm);
+        if (ret.game == null && ret.jvm == null) return null;
+        return ret;
+    }
 
     public static List<String> parseStringArguments(List<String> arguments, Map<String, String> keys) {
         return CollectionUtils.map(arguments, str -> keys.getOrDefault(str, str));
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java
index a8db1cec92..3c347da8aa 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/MinecraftVersion.java
@@ -34,6 +34,7 @@ import org.jackhuang.hmcl.core.GameException;
 import org.jackhuang.hmcl.core.service.IMinecraftProvider;
 import org.jackhuang.hmcl.core.asset.AssetsIndex;
 import org.jackhuang.hmcl.util.ArrayUtils;
+import org.jackhuang.hmcl.util.CollectionUtils;
 
 /**
  *
@@ -81,8 +82,9 @@ public class MinecraftVersion implements Cloneable, Comparable<MinecraftVersion>
     public MinecraftVersion() {
     }
 
-    public MinecraftVersion(String minecraftArguments, String mainClass, String time, String id, String type, String processArguments, String releaseTime, String assets, String jar, String inheritsFrom, String runDir, int minimumLauncherVersion, List<MinecraftLibrary> libraries, boolean hidden, Map<String, GameDownloadInfo> downloads, AssetIndexDownloadInfo assetIndexDownloadInfo, Map<String, LoggingInfo> logging) {
+    public MinecraftVersion(Arguments arguments, String minecraftArguments, String mainClass, String time, String id, String type, String processArguments, String releaseTime, String assets, String jar, String inheritsFrom, String runDir, int minimumLauncherVersion, List<MinecraftLibrary> libraries, boolean hidden, Map<String, GameDownloadInfo> downloads, AssetIndexDownloadInfo assetIndexDownloadInfo, Map<String, LoggingInfo> logging) {
         this();
+        this.arguments = Arguments.clone(arguments);
         this.minecraftArguments = minecraftArguments;
         this.mainClass = mainClass;
         this.time = time;
@@ -100,28 +102,9 @@ public class MinecraftVersion implements Cloneable, Comparable<MinecraftVersion>
             this.assetIndex = null;
         else
             this.assetIndex = (AssetIndexDownloadInfo) assetIndexDownloadInfo.clone();
-        if (libraries == null)
-            this.libraries = new ArrayList<>();
-        else {
-            this.libraries = new ArrayList<>(libraries.size());
-            for (MinecraftLibrary library : libraries)
-                if (library != null)
-                    this.libraries.add((MinecraftLibrary) library.clone());
-        }
-        if (downloads == null)
-            this.downloads = null;
-        else {
-            this.downloads = new HashMap<>(downloads.size());
-            for (Map.Entry<String, GameDownloadInfo> entry : downloads.entrySet())
-                this.downloads.put(entry.getKey(), (GameDownloadInfo) entry.getValue().clone());
-        }
-        if (logging == null)
-            this.logging = null;
-        else {
-            this.logging = new HashMap<>(logging.size());
-            for (Map.Entry<String, LoggingInfo> entry : logging.entrySet())
-                this.logging.put(entry.getKey(), (LoggingInfo) entry.getValue().clone());
-        }
+        this.libraries = CollectionUtils.deepCopy(libraries, value -> (MinecraftLibrary) value.clone());
+        this.downloads = CollectionUtils.deepCopy(downloads, value -> (GameDownloadInfo) value.clone());
+        this.logging = CollectionUtils.deepCopy(logging, value -> (LoggingInfo) value.clone());
     }
 
     @Override
@@ -153,6 +136,7 @@ public class MinecraftVersion implements Cloneable, Comparable<MinecraftVersion>
         }
         parent = parent.resolve(provider, resolvedSoFar);
         MinecraftVersion result = new MinecraftVersion(
+                Arguments.merge(parent.arguments, this.arguments),
                 this.minecraftArguments != null ? this.minecraftArguments : parent.minecraftArguments,
                 this.mainClass != null ? this.mainClass : parent.mainClass,
                 this.time, this.id, this.type, parent.processArguments, this.releaseTime,
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/OSRestriction.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/OSRestriction.java
index d55e3d7111..d7587868d3 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/OSRestriction.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/OSRestriction.java
@@ -26,7 +26,7 @@ import org.jackhuang.hmcl.util.sys.OS;
  *
  * @author huangyuhui
  */
-public class OSRestriction {
+public class OSRestriction implements Cloneable {
 
     @SerializedName("version")
     private String version;
@@ -90,4 +90,13 @@ public class OSRestriction {
         }
         return true;
     }
+
+    @Override
+    public Object clone() {
+        try {
+            return super.clone();
+        } catch (CloneNotSupportedException ex) {
+            throw new AssertionError(ex);
+        }
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/RuledArgument.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/RuledArgument.java
index 86f6e9e8ef..5a32e01b0c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/RuledArgument.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/RuledArgument.java
@@ -47,6 +47,18 @@ public class RuledArgument implements Argument {
         this.value = args;
     }
 
+    @Override
+    public Object clone() {
+        try {
+            RuledArgument ret = (RuledArgument) super.clone();
+            ret.rules = CollectionUtils.deepCopy(rules, value -> (Rules) value.clone());
+            ret.value = CollectionUtils.copy(value);
+            return ret;
+        } catch (CloneNotSupportedException ex) {
+            throw new AssertionError(ex);
+        }
+    }
+
     @Override
     public List<String> toString(Map<String, String> keys, Map<String, Boolean> features) {
         if (!Rules.allow(rules, features))
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Rules.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Rules.java
index 89811df3e9..60979a92a6 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Rules.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/Rules.java
@@ -21,12 +21,13 @@ import com.google.gson.annotations.SerializedName;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.Map;
+import org.jackhuang.hmcl.util.CollectionUtils;
 
 /**
  *
  * @author huangyuhui
  */
-public class Rules {
+public class Rules implements Cloneable {
 
     @SerializedName("action")
     private String action;
@@ -48,6 +49,18 @@ public class Rules {
         this.features = features;
     }
 
+    @Override
+    public Object clone() {
+        try {
+            Rules rules = (Rules) super.clone();
+            rules.os = (OSRestriction) os.clone();
+            rules.features = CollectionUtils.copy(features);
+            return rules;
+        } catch (CloneNotSupportedException ex) {
+            throw new AssertionError(ex);
+        }
+    }
+
     public String action(Map<String, Boolean> features) {
         if (os != null && !os.isCurrentOS()) return null;
         if (this.features != null) {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/StringArgument.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/StringArgument.java
index af89a88a0b..d16498fa0f 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/StringArgument.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/core/version/StringArgument.java
@@ -35,6 +35,15 @@ public class StringArgument implements Argument {
         this.argument = argument;
     }
 
+    @Override
+    public Object clone() {
+        try {
+            return super.clone();
+        } catch (CloneNotSupportedException ex) {
+            throw new AssertionError(ex);
+        }
+    }
+
     @Override
     public List<String> toString(Map<String, String> keys, Map<String, Boolean> features) {
         String res = argument;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ArrayUtils.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ArrayUtils.java
index 2cd2d5cb7c..ca874a1d54 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ArrayUtils.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ArrayUtils.java
@@ -73,6 +73,9 @@ public final class ArrayUtils {
     }
 
     public static <T> ArrayList<T> merge(List<T> a, List<T> b) {
+        if (a == null && b == null) return null;
+        else if (a == null) return new ArrayList<>(b);
+        else if (b == null) return new ArrayList<>(a);
         ArrayList<T> al = new ArrayList<>(a.size() + b.size());
         al.addAll(a);
         al.addAll(b);
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/CollectionUtils.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/CollectionUtils.java
index 8e4f91823c..f0a9cb0750 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/CollectionUtils.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/CollectionUtils.java
@@ -20,8 +20,10 @@ package org.jackhuang.hmcl.util;
 import org.jackhuang.hmcl.api.func.Predicate;
 import java.util.ArrayList;
 import java.util.Collection;
+import java.util.HashMap;
 import java.util.Iterator;
 import java.util.List;
+import java.util.Map;
 import org.jackhuang.hmcl.api.func.Function;
 
 /**
@@ -65,4 +67,40 @@ public final class CollectionUtils {
             }
         return removed;
     }
+    
+    public static <T extends Cloneable> ArrayList<T> deepCopy(List<T> original, Function<T, T> clone) {
+        if (original == null)
+            return null;
+        ArrayList<T> ret = new ArrayList<>(original.size());
+        for (T x : original)
+            ret.add(clone.apply(x));
+        return ret;
+    }
+    
+    public static <T> ArrayList<T> copy(List<T> original) {
+        if (original == null)
+            return null;
+        ArrayList<T> ret = new ArrayList<>(original.size());
+        for (T x : original)
+            ret.add(x);
+        return ret;
+    }
+    
+    public static <K, V extends Cloneable> Map<K, V> deepCopy(Map<K, V> original, Function<V, V> clone) {
+        if (original == null)
+            return null;
+        HashMap<K, V> ret = new HashMap<>(original.size());
+        for (HashMap.Entry<K, V> x : original.entrySet())
+            ret.put(x.getKey(), clone.apply(x.getValue()));
+        return ret;
+    }
+    
+    public static <K, V> Map<K, V> copy(Map<K, V> original) {
+        if (original == null)
+            return null;
+        HashMap<K, V> ret = new HashMap<>(original.size());
+        for (HashMap.Entry<K, V> x : original.entrySet())
+            ret.put(x.getKey(), x.getValue());
+        return ret;
+    }
 }