diff --git a/requirements.txt b/requirements.txt
index fc32af0..95bfb6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ mock==3.0.5
 nose==1.3.7
 numpy==1.16.3
 pandas==0.24.2
-protobuf==3.8.0
+protobuf==3.15.0
 pyasn1==0.4.5
 pyasn1-modules==0.2.5
 pyparsing==2.4.0