diff --git a/requirements.txt b/requirements.txt
index c13a4e5..21021a7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ mako==1.0.6
 matplotlib==2.0.0
 numpy==1.12.0
 pillow==8.1.1
-protobuf==3.2.0
+protobuf==3.18.3
 pyyaml==5.4
 pyxdg==0.26
 requests==2.20.0