diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index e90c92e..63740d0
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,7 +41,7 @@ numpy==1.17.3
 oauth2client==3.0.0
 passlib==1.7.1
 Pillow==6.2.1
-protobuf==3.10.0
+protobuf==3.18.3
 pyasn1==0.4.7
 pyasn1-modules==0.2.7
 pycryptodome==3.4.3