diff --git a/VoiceAssistant/nlu/requirements.txt b/VoiceAssistant/nlu/requirements.txt
index 17cc35e..324994a 100644
--- a/VoiceAssistant/nlu/requirements.txt
+++ b/VoiceAssistant/nlu/requirements.txt
@@ -17,7 +17,7 @@ numpy==1.18.5
 oauthlib==3.1.0
 pandas==1.1.5
 Pillow==8.0.1
-protobuf==3.14.0
+protobuf==3.18.3
 pydub==0.23.1
 pytorch-lightning==1.1.1
 regex==2020.11.13