diff --git a/docutranslate/translator/__init__.py b/docutranslate/translator/__init__.py
index 5a9c00b..87f260c 100644
--- a/docutranslate/translator/__init__.py
+++ b/docutranslate/translator/__init__.py
@@ -1,6 +1,6 @@
 default_params = {
     "thinking": "disable",
-    "chunk_size": 3000,
+    "chunk_size": 5000,
     "concurrent": 30,
     "temperature": 0.7,
     "timeout": 1200,