diff --git a/requirements.txt b/requirements.txt
index 4d52aaf..3abae61 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ patsy==0.5.1
 pbr==5.1.3
 pickleshare==0.7.5
 prompt-toolkit==2.0.9
-protobuf==3.7.1
+protobuf==3.15.0
 Pygments==2.3.1
 pyparsing==2.4.0
 python-dateutil==2.8.0