diff --git a/requirements.txt b/requirements.txt
index 94afd8d..48391da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,7 +70,7 @@ pkg-resources==0.0.0
 plainbox==0.25
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.9.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.1.9
 pycups==1.9.73