diff --git a/requirements.txt b/requirements.txt
index 99ec451..2ba5b6a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ networkx==2.4
 numpy==1.15.2
 opencv-python==3.4.3.18
 Pillow==7.0.0
-protobuf==3.11.3
+protobuf==3.18.3
 pycparser==2.19
 PyJWT==1.7.1
 PyMySQL==0.9.3