diff --git a/flask/requirements.txt b/flask/requirements.txt
old mode 100755
new mode 100644
index ff324e1..11200d2
--- a/flask/requirements.txt
+++ b/flask/requirements.txt
@@ -12,4 +12,4 @@ pandas==0.20.3
 numpy==1.14.2
 nltk==3.2.4
 keras==2.1.6
-tensorflow==1.7.0
+tensorflow==2.5.3