--- a/pairtools/cli/select.py
+++ b/pairtools/cli/select.py
@@ -87,7 +87,7 @@
     remove_columns,
     **kwargs,
 ):
-    """Select pairs according to some condition.
+    r"""Select pairs according to some condition.
 
     CONDITION : A Python expression; if it returns True, select the read pair.
     Any column declared in the #columns line of the pairs header can be
--- a/pairtools/lib/stats.py
+++ b/pairtools/lib/stats.py
@@ -1154,7 +1154,7 @@
 
 
 def extract_tile_info(series, regex=False):
-    """Extract the name of the tile for each read name in the series
+    r"""Extract the name of the tile for each read name in the series
     Parameters
     ----------
     series : pd.Series