diff --git a/setup.py b/setup.py
index 9177c82c32ff8cceab356c6a180d548940c27b5f..84a7bfdca72eb808eab9349b1fa2809ad30997b8 100644
--- a/setup.py
+++ b/setup.py
@@ -62,6 +62,7 @@ install_requires = [
         "dill==0.3.0",
         "docutils==0.17.1",
         "dynaconf==3.1.4",
+        "dynflatfield==1.0.0",
         "env_cache==0.1",
         "extra_data==1.15.1",
         "extra_geom==1.10.0",