diff --git a/requirements.txt b/requirements.txt
index 33a391d..da8fb71 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ mkl-service==2.3.0
 numpy==1.18.1
 opencv-python==4.2.0.34
 Pillow==9.0.1
-protobuf==3.11.4
+protobuf==3.18.3
 PySocks==1.7.1
 requests==2.23.0
 scipy==1.4.1