diff --git a/requirements.txt b/requirements.txt
index a738710..00150cf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ numpy==1.18.5
 oauthlib==3.1.0
 opt-einsum==3.3.0
 Pillow==7.2.0
-protobuf==3.12.4
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 python-dateutil==2.8.1