diff --git a/requirements.txt b/requirements.txt
index fef86e0..a4d204c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -28,7 +28,7 @@ opt-einsum==3.3.0
 packaging==20.3
 pep517==0.8.2
 progress==1.5
-protobuf==3.13.0
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pygame==2.0.0.dev6