diff --git a/ml_model/requirements.txt b/ml_model/requirements.txt
index 121e447..67c37be 100644
--- a/ml_model/requirements.txt
+++ b/ml_model/requirements.txt
@@ -10,7 +10,7 @@ Keras-Preprocessing==1.1.0
 Markdown==3.1.1
 numpy==1.16.0
 pandas==0.25.1
-protobuf==3.9.2
+protobuf==3.15.0
 python-dateutil==2.8.0
 pytz==2019.2
 scikit-learn==0.21.3