diff --git a/fastchat/serve/gradio_block_arena_vision.py b/fastchat/serve/gradio_block_arena_vision.py
index e5b529bff..bd745791f 100644
--- a/fastchat/serve/gradio_block_arena_vision.py
+++ b/fastchat/serve/gradio_block_arena_vision.py
@@ -233,20 +233,6 @@ def wrap_pdfchat_query(query, document):
 
 
 LLAMA_PARSE_MAX_RETRY = 2
-TESSERACT_SUPPORTED_LANGS = "+".join(
-    [
-        "en",
-        "chi_tra",
-        "chi_sim",
-        "rus",
-        "spa",
-        "jpn",
-        "kor",
-        "fra",
-        "deu",  # German
-        "vie",
-    ]
-)
 LLAMAPARSE_SUPPORTED_LANGS = {
     "English": "en",
     "Chinese": "ch_sim",
@@ -260,28 +246,6 @@ def wrap_pdfchat_query(query, document):
 }
 
 
-def detect_language_from_doc(pdf_file_path):
-    from pdf2image import convert_from_path
-    from polyglot.detect import Detector
-
-    import pytesseract  # Google's open-source OCR tool
-
-    assert os.environ[
-        "TESSDATA_PREFIX"
-    ], "Make sure to specify location of train data for Tesseract."
-
-    # Convert pdf into image (first page only for efficiency)
-    images = convert_from_path(pdf_file_path)
-
-    extracted_text = pytesseract.image_to_string(
-        images[0], lang=TESSERACT_SUPPORTED_LANGS
-    )
-
-    languages = Detector(extracted_text, quiet=True)
-    # return languages
-    return [lang.name for lang in languages.languages if lang.name != "un"]
-
-
 def parse_pdf(file_path):
     from llama_parse import LlamaParse
 
@@ -289,15 +253,14 @@ def parse_pdf(file_path):
         "LLAMA_CLOUD_API_KEY" in os.environ
     ), "Make sure to specify LlamaParse API key."
 
-    doc_lang = detect_language_from_doc(file_path)
-    doc_lang = LLAMAPARSE_SUPPORTED_LANGS[doc_lang[0]]
-
     for _ in range(LLAMA_PARSE_MAX_RETRY):
         try:
             documents = LlamaParse(
                 result_type="markdown",
                 verbose=True,
-                language=doc_lang,
+                languages=list(
+                    LLAMAPARSE_SUPPORTED_LANGS.values()
+                ),
                 accurate_mode=True,
             ).load_data(file_path)
             assert len(documents) > 0
diff --git a/fastchat/serve/setup_pdfchat.sh b/fastchat/serve/setup_pdfchat.sh
index e2d3fbc15..2511b939d 100644
--- a/fastchat/serve/setup_pdfchat.sh
+++ b/fastchat/serve/setup_pdfchat.sh
@@ -2,18 +2,4 @@
 
 # Install Python packages
 pip install llama-index-core llama-parse llama-index-readers-file python-dotenv
-pip install polyglot
-pip install PyICU
-pip install pycld2
-pip install pytesseract
-
-pip install pdf2image
-
-# Clone the Tesseract tessdata repository
-git clone https://github.com/tesseract-ocr/tessdata
-
-# cd into tessdata and set TESSDATA_PREFIX to the current directory
-cd tessdata
-export TESSDATA_PREFIX="$(pwd)"
-
-echo "TESSDATA_PREFIX is set to: $TESSDATA_PREFIX"
\ No newline at end of file
+pip install pdf2image
\ No newline at end of file