diff --git a/requirements.txt b/requirements.txt
index 748defb..374f540 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -68,7 +68,7 @@ pexpect==4.7.0
 pickleshare==0.7.5
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
-protobuf==3.7.1
+protobuf==3.15.0
 ptyprocess==0.6.0
 pycparser==2.19
 Pygments==2.3.1