diff --git a/requirement.txt b/requirement.txt
index bf7425f..a2a5104 100644
--- a/requirement.txt
+++ b/requirement.txt
@@ -30,7 +30,7 @@ pbr==5.2.0
 Pillow==6.0.0
 pkg-resources==0.0.0
 progressbar2==3.39.3
-protobuf==3.7.1
+protobuf==3.15.0
 pycparser==2.19
 pyglet==1.3.2
 PyOpenGL==3.1.0