diff --git a/requirements.txt b/requirements.txt
index e9cbae2..0ce60d8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -77,7 +77,7 @@ preshed==3.0.2
 prettytable==0.7.2
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.11.0
+protobuf==3.15.0
 psutil==5.6.5
 ptyprocess==0.6.0
 pycountry==19.8.18