diff --git a/rules/retrieve.smk b/rules/retrieve.smk
index 75cf8062..ac89e360 100644
--- a/rules/retrieve.smk
+++ b/rules/retrieve.smk
@@ -227,6 +227,7 @@ if config["enable"]["retrieve"]:
         run:
             move(input[0], output[0])
 
+
 if config["enable"]["retrieve"]:
 
     # Downloading Copernicus Global Land Cover for land cover and land use:
@@ -238,26 +239,29 @@ if config["enable"]["retrieve"]:
                 static=True,
             ),
         output:
-            RESOURCES + "Copernicus_LC100_global_v3.0.1_2019-nrt_Discrete-Classification-map_EPSG-4326.tif",
-        run: move(input[0], output[0])
+            RESOURCES
+            + "Copernicus_LC100_global_v3.0.1_2019-nrt_Discrete-Classification-map_EPSG-4326.tif",
+        run:
+            move(input[0], output[0])
 
 
 if config["enable"]["retrieve"]:
-
-    current_month = datetime.now().strftime('%b')
-    current_year = datetime.now().strftime('%Y')
+    current_month = datetime.now().strftime("%b")
+    current_year = datetime.now().strftime("%Y")
     bYYYY = f"{current_month}{current_year}"
 
     def check_file_exists(url):
         response = requests.head(url)
         return response.status_code == 200
 
-    url = f'https://d1gam3xoknrgr2.cloudfront.net/current/WDPA_{bYYYY}_Public.zip'
+    url = f"https://d1gam3xoknrgr2.cloudfront.net/current/WDPA_{bYYYY}_Public.zip"
 
     if not check_file_exists(url):
-        prev_month = (datetime.now()-timedelta(30)).strftime('%b')
+        prev_month = (datetime.now() - timedelta(30)).strftime("%b")
         bYYYY = f"{prev_month}{current_year}"
-        assert check_file_exists(f'https://d1gam3xoknrgr2.cloudfront.net/current/WDPA_{bYYYY}_Public.zip'), "The file does not exist."
+        assert check_file_exists(
+            f"https://d1gam3xoknrgr2.cloudfront.net/current/WDPA_{bYYYY}_Public.zip"
+        ), "The file does not exist."
 
     # Downloading protected area database from WDPA
     # extract the main zip and then merge the contained 3 zipped shapefiles
@@ -268,7 +272,7 @@ if config["enable"]["retrieve"]:
                 f"d1gam3xoknrgr2.cloudfront.net/current/WDPA_{bYYYY}_Public_shp.zip",
                 static=True,
                 keep_local=True,
-            )
+            ),
         params:
             zip=RESOURCES + f"WDPA_{bYYYY}_shp.zip",
             folder=directory(RESOURCES + f"WDPA_{bYYYY}"),
@@ -279,15 +283,16 @@ if config["enable"]["retrieve"]:
             shell("unzip -o {params.zip} -d {params.folder}")
             for i in range(3):
                 # vsizip is special driver for directly working with zipped shapefiles in ogr2ogr
-                layer_path = f"/vsizip/{params.folder}/WDPA_{bYYYY}_Public_shp_{i}.zip"
+                layer_path = (
+                    f"/vsizip/{params.folder}/WDPA_{bYYYY}_Public_shp_{i}.zip"
+                )
                 print(f"Adding layer {i+1} of 3 to combined output file.")
                 shell("ogr2ogr -f gpkg -update -append {output.gpkg} {layer_path}")
 
-
-    # Downloading Marine protected area database from WDPA
-    # extract the main zip and then merge the contained 3 zipped shapefiles
-    # Website: https://www.protectedplanet.net/en/thematic-areas/marine-protected-areas
     rule download_wdpa_marine:
+        # Downloading Marine protected area database from WDPA
+        # extract the main zip and then merge the contained 3 zipped shapefiles
+        # Website: https://www.protectedplanet.net/en/thematic-areas/marine-protected-areas
         input:
             HTTP.remote(
                 f"d1gam3xoknrgr2.cloudfront.net/current/WDPA_WDOECM_{bYYYY}_Public_marine_shp.zip",
@@ -309,6 +314,7 @@ if config["enable"]["retrieve"]:
                 shell("ogr2ogr -f gpkg -update -append {output.gpkg} {layer_path}")
 
 
+
 if config["enable"]["retrieve"]:
 
     rule retrieve_monthly_co2_prices: