diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index e46d498c..76a9ebb9
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ pickleshare==0.7.5
 Pillow==6.2.2
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.11.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.7