diff --git a/requirements.txt b/requirements.txt
index 95c4c15..4993bf1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -68,7 +68,7 @@ pickleshare==0.7.5
 Pillow==5.4.1
 prometheus-client==0.11.0
 prompt-toolkit==3.0.20
-protobuf==3.18.0
+protobuf==3.18.3
 pycparser==2.20
 Pygments==2.10.0
 pyparsing==2.4.7