diff --git a/requirements.txt b/requirements.txt
index 7212e16..8ae33ea 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ mccabe==0.6.1
 numpy==1.18.1
 oauthlib==3.1.0
 pandas==1.0.2
-protobuf==3.11.3
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pylint==2.4.4