diff --git a/requirements.txt b/requirements.txt
index d67da9b..566ecb0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-protobuf==3.6.1
+protobuf==3.18.3
 coloredlogs==10.0
 mido==1.2.9
 numpy==1.16.0