diff --git a/requirements.txt b/requirements.txt
index 0e976f6..d5158f6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -81,7 +81,7 @@ pandas==0.24.2
 pathtools==0.1.2
 Pillow==6.2.0
 pocketsphinx==0.1.3
-protobuf==3.7.1
+protobuf==3.18.3
 pyannote.algorithms==0.8
 pyannote.core==2.2.2
 pyannote.parser==0.7.1