diff --git a/pyproject.toml_future b/pyproject.toml_future
index 553220e..3bf74c2 100644
--- a/pyproject.toml_future
+++ b/pyproject.toml_future
@@ -22,7 +22,7 @@ classifiers = [
 ]
 requires-python = ">=3.9"
 dependencies = [
-    "pyaro >=0.0.6",
+    "pyaro[optional] >=0.0.6",
     "requests",
     "fiona",
     "netCDF4",
diff --git a/setup.cfg b/setup.cfg
index 419fd20..598e300 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,7 +21,7 @@ url = https://github.com/metno/pyaro-readers
 [options]
 python_version = >=3.10
 install_requires =
-    pyaro >= 0.0.10
+    pyaro[optional] >= 0.0.10
     geocoder_reverse_natural_earth >= 0.0.2
     netCDF4
     requests