diff --git a/requirements.txt b/requirements.txt
index 2b1042e..6db324b 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,8 @@
 chardet>=3.0.4
 click>=6.7
+matplotlib>=2.2.3
 numpy>=1.13.3
+opencv-python>=3.4.2.17
 openpyxl>=2.5.8
 pandas>=0.23.4
 pdfminer.six>=20170720