diff --git a/requirements.txt b/requirements.txt
index 9e0fc40..646dfd5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ oauthlib==3.1.0
 openpyxl==3.0.3
 opt-einsum==3.2.0
 pandas==1.0.3
-protobuf==3.11.3
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 python-dateutil==2.8.1