diff --git a/requirements.txt b/requirements.txt
index a562200..efbbe31 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ numpy==1.19.1
 orthopy==0.8.4
 pandas==1.1.0
 Pillow==7.2.0
-protobuf==3.12.4
+protobuf==3.18.3
 pyglet==1.5.0
 pyparsing==2.4.7
 python-dateutil==2.8.1