diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index b910a2b..c71997f
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ Pillow
 cython
 matplotlib
 scikit-image
-tensorflow==1.13.1
+tensorflow==1.15.2
 keras==2.0.8
 opencv-python
 h5py