diff --git a/requirements.txt b/requirements.txt
index b093d1c..acce16d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ numpy==1.18.3
 oauthlib==3.1.0
 opt-einsum==3.2.1
 prompt-toolkit==1.0.14
-protobuf==3.11.3
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycodestyle==2.5.0