diff --git a/requirements.txt b/requirements.txt
index 9c317e6..0400d37 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ Pillow>=6.2.0
 pluggy==0.8.1
 prometheus-client==0.5.0
 prompt-toolkit==2.0.8
-protobuf==3.5.2
+protobuf==3.18.3
 py==1.7.0
 pycparser==2.19
 pyglet==1.3.2