diff --git a/src/io/mod.rs b/src/io/mod.rs
index 76538b9..58e7eb9 100644
--- a/src/io/mod.rs
+++ b/src/io/mod.rs
@@ -47,7 +47,9 @@ use std::marker::PhantomData;
 use std::path::Path;
 
 use crate::{FgError, Result};
-use csv::{DeserializeRecordsIntoIter, QuoteStyle, ReaderBuilder, Writer, WriterBuilder, StringRecord};
+use csv::{
+    DeserializeRecordsIntoIter, QuoteStyle, ReaderBuilder, StringRecord, Writer, WriterBuilder,
+};
 use flate2::bufread::MultiGzDecoder;
 use flate2::write::GzEncoder;
 use flate2::Compression;