diff --git a/requirements.txt b/requirements.txt
index 98652cb..bfedc7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,7 +48,7 @@ pathspec==0.6.0
 pbr==5.4.4
 pillow==6.2.1
 pipdeptree==0.13.2
-protobuf==3.11.0
+protobuf==3.18.3
 pyarrow==0.12.1
 pyasn1==0.4.8
 pyasn1-modules==0.2.7