diff --git a/src/requirements.txt b/src/requirements.txt
old mode 100755
new mode 100644
index 4498084..346af50
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -57,7 +57,7 @@ passlib==1.7.2
 pbr==5.4.5
 pendulum==2.1.0
 promise==2.3
-protobuf==3.12.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.20