diff --git a/requirements.txt b/requirements.txt
index 775a7ac..a6521f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,7 +48,7 @@ pathtools==0.1.2
 Pillow==6.0.0
 port-for==0.3.1
 progressbar2==3.39.3
-protobuf==3.7.1
+protobuf==3.15.0
 pycparser==2.19
 pyglet==1.3.2
 Pygments==2.4.0