diff --git a/repo2docker/contentproviders/ckan.py b/repo2docker/contentproviders/ckan.py
index 9c74afdf..2618fd06 100644
--- a/repo2docker/contentproviders/ckan.py
+++ b/repo2docker/contentproviders/ckan.py
@@ -1,6 +1,6 @@
 from datetime import datetime, timedelta, timezone
 from os import path
-from urllib.parse import parse_qs, urlparse, urlencode
+from urllib.parse import parse_qs, urlencode, urlparse
 
 from requests import Session
 
@@ -89,11 +89,13 @@ def fetch(self, spec, output_dir, yield_output=False):
 
         # handle the activites
         if activity_id:
-            fetch_url = (
-                f"{spec['api_url']}activity_data_show?" + urlencode({"id": activity_id, "object_type": "package"})
+            fetch_url = f"{spec['api_url']}activity_data_show?" + urlencode(
+                {"id": activity_id, "object_type": "package"}
             )
         else:
-            fetch_url = f"{spec['api_url']}package_show?" + urlencode({"id": dataset_id})
+            fetch_url = f"{spec['api_url']}package_show?" + urlencode(
+                {"id": dataset_id}
+            )
 
         resp = self.urlopen(
             fetch_url,