diff --git a/HMCLCore/build.gradle.kts b/HMCLCore/build.gradle.kts
index 1cd003f13..c94473b50 100644
--- a/HMCLCore/build.gradle.kts
+++ b/HMCLCore/build.gradle.kts
@@ -13,20 +13,4 @@ dependencies {
     api("org.nanohttpd:nanohttpd:2.3.1")
     api("org.apache.commons:commons-compress:1.25.0")
     compileOnlyApi("org.jetbrains:annotations:24.1.0")
-    compileOnlyApi("com.github.burningtnt:BytecodeImplGenerator:b45b6638eeaeb903aa22ea947d37c45e5716a18c")
-}
-
-tasks.getByName<JavaCompile>("compileJava") {
-    val bytecodeClasses = listOf(
-        "org/jackhuang/hmcl/util/platform/ManagedProcess"
-    )
-
-    doLast {
-        javaexec {
-            classpath(project.sourceSets["main"].compileClasspath)
-            mainClass.set("net.burningtnt.bcigenerator.BytecodeImplGenerator")
-            System.getProperty("bci.debug.address")?.let { address -> jvmArgs("-agentlib:jdwp=transport=dt_socket,server=n,address=$address,suspend=y") }
-            args(bytecodeClasses.map { s -> project.layout.buildDirectory.file("classes/java/main/$s.class").get().asFile.path })
-        }
-    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/ManagedProcess.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/ManagedProcess.java
index d2a3fd537..49186ec3c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/ManagedProcess.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/platform/ManagedProcess.java
@@ -17,12 +17,12 @@
  */
 package org.jackhuang.hmcl.util.platform;
 
-import net.burningtnt.bcigenerator.api.BytecodeImpl;
-import net.burningtnt.bcigenerator.api.BytecodeImplError;
 import org.jackhuang.hmcl.launch.StreamPump;
 import org.jackhuang.hmcl.util.Lang;
 
 import java.io.IOException;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
 import java.lang.reflect.Field;
 import java.util.*;
 import java.util.function.Consumer;
@@ -92,7 +92,13 @@ public class ManagedProcess {
     public long getPID() throws UnsupportedOperationException {
         if (JavaVersion.CURRENT_JAVA.getParsedVersion() >= 9) {
             // Method Process.pid() is provided (Java 9 or later). Invoke it to get the pid.
-            return getPID0(process);
+            try {
+                return (long) MethodHandles.publicLookup()
+                        .findVirtual(Process.class, "pid", MethodType.methodType(long.class))
+                        .invokeExact(process);
+            } catch (Throwable e) {
+                throw new UnsupportedOperationException("Cannot get the pid", e);
+            }
         } else {
             // Method Process.pid() is not provided. (Java 8).
             if (OperatingSystem.CURRENT_OS == OperatingSystem.WINDOWS) {
@@ -118,23 +124,6 @@ public class ManagedProcess {
         }
     }
 
-    /**
-     * Get the PID of a process with BytecodeImplGenerator
-     */
-    @BytecodeImpl({
-            "LABEL METHOD_HEAD",
-            "ALOAD 0",
-            "INVOKEVIRTUAL Ljava/lang/Process;pid()J",
-            "LABEL RELEASE_PARAMETER",
-            "LRETURN",
-            "LOCALVARIABLE process [Ljava/lang/Process; METHOD_HEAD RELEASE_PARAMETER 0",
-            "MAXS 2 1"
-    })
-    @SuppressWarnings("unused")
-    private static long getPID0(Process process) {
-        throw new BytecodeImplError();
-    }
-
     /**
      * The command line.
      *