diff --git a/requirements.txt b/requirements.txt
index 85a6b58..0f49c0b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -83,7 +83,7 @@ pexpect==4.7.0
 pickleshare==0.7.5
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.10.0
+protobuf==3.15.0
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.7