diff --git a/requirements.txt b/requirements.txt
index dd71197..728c651 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -47,7 +47,7 @@ opt-einsum==3.2.1
 pandas==1.0.3
 Pillow>=8.2.0
 plyfile==0.7.2
-protobuf==3.11.3
+protobuf==3.18.3
 py-spy==0.3.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8