diff --git a/src/main.rs b/src/main.rs
index 84532d5..f3f9a07 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -31,7 +31,7 @@ fn print_df(ticker: &Ticker, df: &DataFrame) {
 
 fn csv_merge() -> Result<(), Error> {
     for ticker in Ticker::iter() {
-        if !std::path::Path::new(&format!("./data/csv/{}", ticker)).exists() {
+        if !std::path::Path::new(&format!("./data/csv/{ticker}")).exists() {
             continue;
         }
 
@@ -46,7 +46,7 @@ fn csv_merge() -> Result<(), Error> {
 }
 
 fn ark_plan(ticker: Ticker) -> Result<(), Error> {
-    println!("Starting: {:#?}", ticker);
+    println!("Starting: {ticker:#?}");
     let sec = Duration::from_secs(rand::rng().random_range(30 * 60..=4 * 60 * 60));
     // sleep(sec).await;
     thread::sleep(sec);
diff --git a/src/util.rs b/src/util.rs
index 43dfa37..709e116 100644
--- a/src/util.rs
+++ b/src/util.rs
@@ -110,8 +110,8 @@ impl Ark {
     fn read_parquet(ticker: &Ticker, path: Option<&String>) -> Result<DF, Error> {
         let df = LazyFrame::scan_parquet(
             match path {
-                Some(p) => format!("{}/{}.parquet", p, ticker),
-                None => format!("data/parquet/{}.parquet", ticker),
+                Some(p) => format!("{p}/{ticker}.parquet"),
+                None => format!("data/parquet/{ticker}.parquet"),
             },
             ScanArgsParquet::default(),
         )?;
@@ -558,7 +558,7 @@ impl Ark {
 
     pub fn merge_old_csv_to_parquet(ticker: Ticker, path: Option<String>) -> Result<Self, Error> {
         let mut dfs = vec![];
-        for x in glob(&format!("data/csv/{}/*", ticker))?.filter_map(Result::ok) {
+        for x in glob(&format!("data/csv/{ticker}/*"))?.filter_map(Result::ok) {
             dfs.push(LazyCsvReader::new(x).finish()?);
         }