diff --git a/requirements.txt b/requirements.txt
index 4790044..25c2af9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 mako==1.0.6
 matplotlib==2.0.0
 numpy==1.12.0
-protobuf==3.2.0
+protobuf==3.15.0
 python-speech-features==0.5
 pyyaml==5.4
 pyxdg==0.26