diff --git a/common/src/main/java/net/minescript/common/SubprocessTask.java b/common/src/main/java/net/minescript/common/SubprocessTask.java
index fab7161..4829007 100644
--- a/common/src/main/java/net/minescript/common/SubprocessTask.java
+++ b/common/src/main/java/net/minescript/common/SubprocessTask.java
@@ -11,7 +11,9 @@
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.io.OutputStreamWriter;
+
 import java.util.concurrent.TimeUnit;
+
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 
@@ -52,7 +54,7 @@ public int run(ScriptConfig.BoundCommand command, JobControl jobControl) {
       return -2;
     }
 
-    stdinWriter = new BufferedWriter(new OutputStreamWriter(process.getOutputStream()));
+    stdinWriter = new BufferedWriter(new OutputStreamWriter(process.getOutputStream(), StandardCharsets.UTF_8));
 
     var stdoutThread =
         new Thread(this::processStdout, Thread.currentThread().getName() + "-stdout");
@@ -82,7 +84,7 @@ public int run(ScriptConfig.BoundCommand command, JobControl jobControl) {
   }
 
   private void processStdout() {
-    try (var stdoutReader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+    try (var stdoutReader = new BufferedReader(new InputStreamReader(process.getInputStream(), StandardCharsets.UTF_8))) {
       String line;
       while ((line = stdoutReader.readLine()) != null) {
         jobControl.yield();
@@ -101,7 +103,7 @@ private void processStdout() {
   }
 
   private void processStderr() {
-    try (var stderrReader = new BufferedReader(new InputStreamReader(process.getErrorStream()))) {
+    try (var stderrReader = new BufferedReader(new InputStreamReader(process.getErrorStream(), StandardCharsets.UTF_8))) {
       String line;
       while ((line = stderrReader.readLine()) != null) {
         jobControl.yield();
diff --git a/common/src/main/resources/system/lib/minescript_runtime.py b/common/src/main/resources/system/lib/minescript_runtime.py
index 0b2af11..867aae2 100644
--- a/common/src/main/resources/system/lib/minescript_runtime.py
+++ b/common/src/main/resources/system/lib/minescript_runtime.py
@@ -22,10 +22,14 @@
 import time
 import threading
 import traceback
+import io
 
 from dataclasses import dataclass
 from typing import Any, List, Set, Dict, Tuple, Optional, Callable
 
+if sys.stdin.encoding != 'utf-8':
+    sys.stdin = io.TextIOWrapper(sys.stdin.buffer, encoding='utf-8', errors='replace')
+
 AnyConsumer = Callable[[str], None]
 ExceptionHandler = Callable[[Exception], None]