diff --git a/requirements.txt b/requirements.txt
index c527e26..40b5d55 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ opencv-python==4.1.1.26
 opt-einsum==3.1.0
 pandas==0.25.1
 Pillow==6.1.0
-protobuf==3.10.0
+protobuf==3.15.0
 psutil==5.6.3
 pyparsing==2.4.2
 python-dateutil==2.8.0