diff --git a/airflow/requirements-python3.7.txt b/airflow/requirements-python3.7.txt
index 8a90ba1..00d8eef 100644
--- a/airflow/requirements-python3.7.txt
+++ b/airflow/requirements-python3.7.txt
@@ -212,7 +212,7 @@ pre-commit==2.2.0
 presto-python-client==0.7.0
 prison==0.1.2
 prompt-toolkit==3.0.4
-protobuf==3.11.3
+protobuf==3.15.0
 psutil==5.7.0
 psycopg2-binary==2.8.4
 ptyprocess==0.6.0