diff --git a/requirements.txt b/requirements.txt
index 7fc6fba..45d4958 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -63,7 +63,7 @@ packaging==20.4
 pep517==0.8.2
 pluggy==0.13.1
 progress==1.5
-protobuf==3.13.0
+protobuf==3.18.3
 py==1.9.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8