diff --git a/requirements.txt b/requirements.txt
index ed82313..0457cae 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ numpy==1.18.4
 oauthlib==3.1.0
 opt-einsum==3.2.1
 Pillow==7.1.2
-protobuf==3.12.2
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==2.4.7