diff --git a/requirements.txt b/requirements.txt
index 9215472..5e3775f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ numpy==1.19.5
 oauthlib==3.1.1
 opt-einsum==3.3.0
 Pillow==8.3.2
-protobuf==3.10.0
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pyparsing==2.4.7