diff --git a/requirements.txt b/requirements.txt
index 78e5fb4..0ec0a15 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -97,7 +97,7 @@ pefile==2018.8.8
 pexpect==4.2.1
 Pillow==5.3.0
 pluggy==0.9.0
-protobuf==3.6.1
+protobuf==3.18.3
 py==1.8.0
 pyasn1==0.4.5
 pycairo==1.16.2