diff --git a/03-deep_learning/01-tensorflow_examples/04-CV/04-ocr/OCR_repo/requirements.txt b/03-deep_learning/01-tensorflow_examples/04-CV/04-ocr/OCR_repo/requirements.txt
old mode 100755
new mode 100644
index 05a6ae33..37618b97
--- a/03-deep_learning/01-tensorflow_examples/04-CV/04-ocr/OCR_repo/requirements.txt
+++ b/03-deep_learning/01-tensorflow_examples/04-CV/04-ocr/OCR_repo/requirements.txt
@@ -1,6 +1,6 @@
 tensorflow_gpu==1.6.0
 numpy==1.13.1
-opencv_python==3.2.0.7
+opencv_python==4.2.0.32
 matplotlib==2.0.2
 keras==2.1.5
 captcha==0.2.4