diff --git a/waternsw_grabber/waternsw_grabber.py b/waternsw_grabber/waternsw_grabber.py
index 086abe9..672bbd4 100644
--- a/waternsw_grabber/waternsw_grabber.py
+++ b/waternsw_grabber/waternsw_grabber.py
@@ -265,7 +265,7 @@ def extract_records(input_dir, output_dir, clean_up=False):
 
     for zip_name in tqdm(zip_names):
         # Skip duplicate downloads
-        if re.search('\([0-9]+\)', zip_name):
+        if re.search(r'\([0-9]+\)', zip_name):
             continue
 
         # Rename '.part' file if zip was not correctly downloaded
@@ -285,11 +285,11 @@ def extract_records(input_dir, output_dir, clean_up=False):
 
         # Get bore specifics
         meta = df.iloc[1, -1]
-        lat = float(re.search('(?<=Lat:)\S+', meta).group())
-        lon = float(re.search('(?<=Long:)\S+', meta).group())
-        elev = float(re.search('(?<=Elev:).+(?=m)', meta).group())
-        address = re.search('(?<=\d\.\d\.\d - ).+(?=\sLat)', meta).group()
-        bore_id = re.search('^\S+', meta).group()
+        lat = float(re.search(r'(?<=Lat:)\S+', meta).group())
+        lon = float(re.search(r'(?<=Long:)\S+', meta).group())
+        elev = float(re.search(r'(?<=Elev:).+(?=m)', meta).group())
+        address = re.search(r'(?<=\d\.\d\.\d - ).+(?=\sLat)', meta).group()
+        bore_id = re.search(r'^\S+', meta).group()
         site, hole, pipe = bore_id.split('.')
 
         # FIXME: detect basin automatically