diff --git a/requirements.txt b/requirements.txt
index 8228e51..63f329f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ opencv-python==4.1.0.25
 packaging==19.0
 pandas==0.23.0
 Pillow==5.2.0
-protobuf==3.8.0
+protobuf==3.18.3
 pycparser==2.19
 Pygments==2.4.2
 pyparsing==2.4.0