diff --git a/requirements.txt b/requirements.txt
index b031c01..1b6ad2c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ mysql-connector-python==8.0.20
 numpy==1.19.0
 plac==1.2.0
 preshed==3.0.2
-protobuf==3.12.2
+protobuf==3.18.3
 pyodbc==4.0.30
 requests==2.24.0
 scikit-learn==0.23.1