diff --git a/requirements.txt b/requirements.txt
index 2a12b080..3039d459 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -38,7 +38,7 @@ numpy==1.17.4
 oauthlib==3.1.0
 opt-einsum==3.1.0
 pandas==0.25.3
-protobuf==3.11.1
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.7
 pylint==2.4.4