diff --git a/install_tools/PIP_requirements.txt b/install_tools/PIP_requirements.txt
index b72da8e..59dcebb 100644
--- a/install_tools/PIP_requirements.txt
+++ b/install_tools/PIP_requirements.txt
@@ -7,7 +7,7 @@ netifaces
 psutil
 netaddr
 enum34
-protobuf==2.5.0
+protobuf==3.15.0
 mozrunner==7.7.0
 mozprofile==2.4.0
 smbprotocol