diff --git a/requirements.txt b/requirements.txt
index f106aa1..ea860a2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ numpy==1.19.0
 oauthlib==3.1.0
 opt-einsum==3.2.1
 pandas==1.0.5
-protobuf==3.12.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 python-dateutil==2.8.1