diff --git a/requirements.txt b/requirements.txt
index 30a1169..8b625b1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -72,7 +72,7 @@ pickleshare==0.7.5
 Pillow==6.2.0
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.10.0
+protobuf==3.15.0
 ptyprocess==0.6.0
 pycairo==1.16.2
 pycrypto==2.6.1