diff --git a/src/bin/download.rs b/src/bin/download.rs
index ac0851f..95ceae5 100644
--- a/src/bin/download.rs
+++ b/src/bin/download.rs
@@ -13,7 +13,7 @@ fn main() {
     };
     dotenv().ok();
 
-    let day_padded = format!("{:02}", day);
+    let day_padded = format!("{day:02}");
     let token = env::var("TOKEN").expect("$TOKEN is not set");
     let year = env::var("YEAR")
         .expect("$YEAR is not set")
@@ -21,7 +21,7 @@ fn main() {
         .expect("$YEAR must be a number");
 
     let mut headers = header::HeaderMap::new();
-    let mut session_header = header::HeaderValue::from_str(format!("session={}", token).as_str())
+    let mut session_header = header::HeaderValue::from_str(format!("session={token}").as_str())
         .expect("Error building cookie header");
     session_header.set_sensitive(true);
     headers.insert(header::COOKIE, session_header);
@@ -29,15 +29,14 @@ fn main() {
     let client = Client::builder().default_headers(headers).build().unwrap();
     let res = client
         .get(format!(
-            "https://adventofcode.com/{}/day/{}/input",
-            year, day
+            "https://adventofcode.com/{year}/day/{day}/input"
         ))
         .send()
         .unwrap()
         .text()
         .unwrap();
 
-    let input_path = format!("src/inputs/{}.txt", day_padded);
+    let input_path = format!("src/inputs/{day_padded}.txt");
     let mut file = match OpenOptions::new()
         .write(true)
         .create(true)
@@ -45,7 +44,7 @@ fn main() {
     {
         Ok(file) => file,
         Err(e) => {
-            eprintln!("Failed to create module file: {}", e);
+            eprintln!("Failed to create module file: {e}");
             process::exit(1);
         }
     };
@@ -55,7 +54,7 @@ fn main() {
             println!("Downloaded input file \"{}\"", &input_path);
         }
         Err(e) => {
-            eprintln!("Failed to write module contents: {}", e);
+            eprintln!("Failed to write module contents: {e}");
             process::exit(1);
         }
     }
diff --git a/src/bin/prepare.rs b/src/bin/prepare.rs
index 2bc92af..446373a 100644
--- a/src/bin/prepare.rs
+++ b/src/bin/prepare.rs
@@ -52,16 +52,16 @@ fn main() {
         }
     };
 
-    let day_padded = format!("{:02}", day);
+    let day_padded = format!("{day:02}");
 
-    let input_path = format!("src/inputs/{}.txt", day_padded);
-    let example_path = format!("src/test_inputs/{}.txt", day_padded);
-    let module_path = format!("src/bin/{}.rs", day_padded);
+    let input_path = format!("src/inputs/{day_padded}.txt");
+    let example_path = format!("src/test_inputs/{day_padded}.txt");
+    let module_path = format!("src/bin/{day_padded}.rs");
 
     let mut file = match safe_create_file(&module_path) {
         Ok(file) => file,
         Err(e) => {
-            eprintln!("Failed to create module file: {}", e);
+            eprintln!("Failed to create module file: {e}");
             process::exit(1);
         }
     };
@@ -71,7 +71,7 @@ fn main() {
             println!("Created module file \"{}\"", &module_path);
         }
         Err(e) => {
-            eprintln!("Failed to write module contents: {}", e);
+            eprintln!("Failed to write module contents: {e}");
             process::exit(1);
         }
     }
@@ -81,7 +81,7 @@ fn main() {
             println!("Created empty input file \"{}\"", &input_path);
         }
         Err(e) => {
-            eprintln!("Failed to create input file: {}", e);
+            eprintln!("Failed to create input file: {e}");
             process::exit(1);
         }
     }
@@ -91,7 +91,7 @@ fn main() {
             println!("Created empty example file \"{}\"", &example_path);
         }
         Err(e) => {
-            eprintln!("Failed to create example file: {}", e);
+            eprintln!("Failed to create example file: {e}");
             process::exit(1);
         }
     }
diff --git a/src/lib.rs b/src/lib.rs
index a789162..3f505e6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -44,7 +44,7 @@ macro_rules! solve {
 pub fn read_file(folder: &str, day: u8) -> String {
     let cwd = env::current_dir().unwrap();
 
-    let filepath = cwd.join("src").join(folder).join(format!("{:02}.txt", day));
+    let filepath = cwd.join("src").join(folder).join(format!("{day:02}.txt"));
 
     let f = fs::read_to_string(filepath);
     f.expect("could not open input file")
@@ -104,8 +104,7 @@ mod tests {
     fn test_parse_exec_time() {
         assert_approx_eq!(
             parse_exec_time(&format!(
-                "🎄 Part 1 🎄\n0 (elapsed: 74.13ns){}\n🎄 Part 2 🎄\n0 (elapsed: 50.00ns){}",
-                ANSI_RESET, ANSI_RESET
+                "🎄 Part 1 🎄\n0 (elapsed: 74.13ns){ANSI_RESET}\n🎄 Part 2 🎄\n0 (elapsed: 50.00ns){ANSI_RESET}"
             )),
             0_f64
         );
diff --git a/src/main.rs b/src/main.rs
index fd13201..3805710 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,7 +8,7 @@ use std::process::Command;
 fn main() {
     let total: f64 = (1..=25)
         .map(|day| {
-            let day = format!("{:02}", day);
+            let day = format!("{day:02}");
 
             let cmd = Command::new("cargo")
                 .args(["run", "--release", "--bin", &day])
@@ -16,7 +16,7 @@ fn main() {
                 .unwrap();
 
             println!("----------");
-            println!("{}| Day {} |{}", ANSI_BOLD, day, ANSI_RESET);
+            println!("{ANSI_BOLD}| Day {day} |{ANSI_RESET}");
             println!("----------");
 
             let output = String::from_utf8(cmd.stdout).unwrap();
@@ -40,7 +40,6 @@ fn main() {
         .sum();
 
     println!(
-        "{}Total:{} {}{:.2}ms{}",
-        ANSI_BOLD, ANSI_RESET, ANSI_ITALIC, total, ANSI_RESET
+        "{ANSI_BOLD}Total:{ANSI_RESET} {ANSI_ITALIC}{total:.2}ms{ANSI_RESET}"
     );
 }