diff --git a/requirements.txt b/requirements.txt
index c07d87d..72a073e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,7 +19,7 @@ opencv-python-headless==4.2.0.32
 OSMPythonTools==0.2.6
 pandas==0.25.3
 Pillow==7.0.0
-protobuf==3.11.3
+protobuf==3.15.0
 scikit-image==0.16.2
 scipy==1.4.1
 Shapely==1.7.0