diff --git a/requirements.txt b/requirements.txt
index fd0e7f6..4e36ac2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,7 +70,7 @@ pluggy==0.13.1
 preshed==2.0.1
 prometheus-client==0.7.1
 prompt-toolkit==3.0.5
-protobuf==3.12.0
+protobuf==3.15.0
 ptyprocess==0.6.0
 py==1.8.1
 Pygments==2.6.1