diff --git a/requirements.txt b/requirements.txt
index a7357d77..af7a700d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,7 +26,7 @@ matplotlib==2.2.3
 numpy==1.17.0
 pandas==0.24.2
 proj==0.1.0
-protobuf==3.15.0
+protobuf==3.18.3
 psycopg2==2.7.5
 pyparsing==2.2.0
 python-dateutil==2.7.3