diff --git a/yolov3/requirements.txt b/yolov3/requirements.txt
index 7ad285e..d573c07 100644
--- a/yolov3/requirements.txt
+++ b/yolov3/requirements.txt
@@ -17,7 +17,7 @@ numpy==1.17.4
 oauthlib==3.1.0
 opencv-python==4.1.1.26
 Pillow==6.2.1
-protobuf==3.10.0
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.7
 pycocotools==2.0.0