diff --git a/ppcls/data/dataloader/face_dataset.py b/ppcls/data/dataloader/face_dataset.py
index 9ee6fdf0cee6314d9aebb9c3eeecd8a495a9f455..8879939a6ea728b915cb1756a8c3292d3c8e76f9 100644
--- a/ppcls/data/dataloader/face_dataset.py
+++ b/ppcls/data/dataloader/face_dataset.py
@@ -1,6 +1,5 @@
 import os
 import json
-import bcolz
 import numpy as np
 from PIL import Image
 import cv2
@@ -215,6 +214,8 @@ def read_memmap(mem_file_name):
 
 
 def get_val_pair(path, name, use_memfile=True):
+    # installing bcolz should set proxy to access internet
+    import bcolz
     if use_memfile:
         mem_file_dir = os.path.join(path, name, 'memfile')
         mem_file_name = os.path.join(mem_file_dir, 'mem_file.dat')
diff --git a/requirements.txt b/requirements.txt
index edb14857fed6e84647b5525a547aaa3d3fcd2471..7fa708b2441229bb5e89385508199f0028805e5e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,5 +9,4 @@ scipy
 scikit-learn==0.23.2
 gast==0.3.3
 faiss-cpu==1.7.1.post2
-bcolz==1.2.1
 scikit-learn==0.23.2
\ No newline at end of file