diff --git a/requirements.txt b/requirements.txt
index b5b24f4..3b5e9d0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ numpy==1.17.4
 oauthlib==3.1.0
 opt-einsum==3.1.0
 pathspec==0.6.0
-protobuf==3.10.0
+protobuf==3.18.3
 psutil==5.6.6
 pyasn1==0.4.7
 pyasn1-modules==0.2.7