diff --git a/requirements.txt b/requirements.txt
index 561f390..3f220bb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -138,7 +138,7 @@ preshed==3.0.2
 prison==0.1.3
 prometheus-client==0.7.1
 prompt-toolkit==3.0.5
-protobuf==3.11.3
+protobuf==3.18.3
 psutil==5.7.0
 ptyprocess==0.6.0
 pyahocorasick==1.4.0