diff --git a/2023/day1/src/main.rs b/2023/day1/src/main.rs
index 85fdd0d..57038b4 100644
--- a/2023/day1/src/main.rs
+++ b/2023/day1/src/main.rs
@@ -176,7 +176,7 @@ mod part2 {
 }
 
 fn main() {
-    let input = std::fs::read_to_string("./input").unwrap();
+    let input = include_str!("../input");
 
     let results: [u32; 2] = [part1::approaches(), part2::approaches()].map(|approaches| {
         input
diff --git a/2023/day2/src/main.rs b/2023/day2/src/main.rs
index 05d5741..054c273 100644
--- a/2023/day2/src/main.rs
+++ b/2023/day2/src/main.rs
@@ -206,7 +206,7 @@ fn limits() -> HashMap<Color, u32> {
 }
 
 fn main() -> Result<(), String> {
-    let input = std::fs::read_to_string("./input").unwrap();
+    let input = include_str!("../input");
 
     match parse_input(&input) {
         Ok(input) => {
@@ -224,7 +224,7 @@ fn main() -> Result<(), String> {
                 nom::Needed::Size(n) => eprintln!("needed {n} more bytes"),
             },
             NomErr::Error(e) | NomErr::Failure(e) => {
-                eprintln!("{}", nom::error::convert_error(input.as_str(), e))
+                eprintln!("{}", nom::error::convert_error(input, e))
             }
         },
     };
@@ -261,7 +261,7 @@ mod tests {
 
     #[test]
     fn example_01() {
-        let input = std::fs::read_to_string("./example_01").unwrap();
+        let input = include_str!("../example_01");
         assert_eq!(
             count_possible_games(&parse_input(&input).unwrap(), &super::limits()).unwrap(),
             8
@@ -270,7 +270,7 @@ mod tests {
 
     #[test]
     fn example_02() {
-        let input = std::fs::read_to_string("./example_02").unwrap();
+        let input = include_str!("../example_02");
         assert_eq!(
             minimum_cube_powered(&parse_input(&input).unwrap()).unwrap(),
             2286
diff --git a/2023/day3/src/main.rs b/2023/day3/src/main.rs
index 70277ca..719544c 100644
--- a/2023/day3/src/main.rs
+++ b/2023/day3/src/main.rs
@@ -156,7 +156,7 @@ fn part2(input: &str) -> usize {
 }
 
 fn main() {
-    let input = std::fs::read_to_string("./input").unwrap();
+    let input = include_str!("../input");
 
     println!("Part 1 : {}", part1(&input));
     println!("Part 2 : {}", part2(&input));