diff --git a/videocr/video.py b/videocr/video.py
index ec368cd..b592dde 100644
--- a/videocr/video.py
+++ b/videocr/video.py
@@ -4,6 +4,7 @@ import sys
 import multiprocessing
 import pytesseract
 import cv2
+import numpy as np
 
 from . import constants
 from . import utils