diff --git a/requirements.txt b/requirements.txt
index 9c366ee..34c6e13 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -83,7 +83,7 @@ Pillow==6.1.0
 pluggy==0.6.0
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.9.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 py==1.5.2
 pyasn1==0.4.2