diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index bd866e0..49205cc
--- a/requirements.txt
+++ b/requirements.txt
@@ -67,7 +67,7 @@ pipreqs==0.4.9
 pluggy==0.6.0
 progressbar2==3.38.0
 prompt-toolkit==1.0.15
-protobuf==3.5.2.post1
+protobuf==3.15.0
 psutil==5.4.5
 ptyprocess==0.5.2
 py==1.5.3