diff --git a/requirements.txt b/requirements.txt
index 5daab6c..480f006 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ kiwisolver==1.0.1
 mysql-connector-python==8.0.19
 numpy==1.18.2
 packaging==20.3
-protobuf==3.6.1
+protobuf==3.18.3
 PyOpenGL==3.1.0
 pyparsing==2.2.0
 PyQt5==5.14.1