diff --git a/requirements.txt b/requirements.txt
index 848cba7..92e2b6e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ Pillow==6.2.0
 ply==3.11
 pretty-midi==0.2.8
 progress==1.5
-protobuf==3.8.0
+protobuf==3.18.3
 psutil==5.6.6
 pyasn1==0.4.5
 pycrypto==2.6.1