diff --git a/rustywind-cli/src/main.rs b/rustywind-cli/src/main.rs
index e9af838..b0ad7e1 100644
--- a/rustywind-cli/src/main.rs
+++ b/rustywind-cli/src/main.rs
@@ -99,8 +99,8 @@ fn main() -> Result<()> {
     color_eyre::install()?;
 
     let cli = Cli::parse();
-    let options = Options::new_from_cli(cli)?;
-    let rustywind = &options.rustywind;
+    let mut options = Options::new_from_cli(cli)?;
+    let rustywind = &mut options.rustywind;
 
     match &options.write_mode {
         WriteMode::ToStdOut => (),
@@ -132,10 +132,11 @@ fn main() -> Result<()> {
             eprint!("[WARN] No classes were found in STDIN");
         }
     } else {
-        options
-            .search_paths
+        let search_paths = &options.search_paths.clone();
+
+        search_paths
             .iter()
-            .for_each(|file_path| run_on_file_paths(file_path, &options));
+            .for_each(|file_path| run_on_file_paths(file_path, &mut options));
 
         if EXIT_ERROR.load(Ordering::Relaxed) {
             std::process::exit(1);
@@ -145,15 +146,16 @@ fn main() -> Result<()> {
     Ok(())
 }
 
-fn run_on_file_paths(file_path: &Path, options: &Options) {
+fn run_on_file_paths(file_path: &Path, options: &mut Options) {
     // if the file is in the ignored_files list return early
     if should_ignore_current_file(&options.ignored_files, file_path) {
         log::debug!("file path {file_path:#?} found in ignored_files, will not sort");
         return;
     }
 
-    let rustywind = &options.rustywind;
+    options.rustywind.check_and_reset_bump();
 
+    let rustywind = &options.rustywind;
     match rustywind.read_file_contents(file_path) {
         Ok(contents) => {
             if rustywind.has_classes(&contents) {
diff --git a/rustywind-core/src/app.rs b/rustywind-core/src/app.rs
index 13365c4..1a9f9f2 100644
--- a/rustywind-core/src/app.rs
+++ b/rustywind-core/src/app.rs
@@ -1,4 +1,4 @@
-use std::{borrow::Cow, fs::File, io::BufRead as _, path::Path};
+use std::{borrow::Cow, fs::File, io::Read as _, path::Path};
 
 use crate::{
     class_wrapping::ClassWrapping,
@@ -53,17 +53,15 @@ impl RustyWind {
         }
     }
 
-    /// Read the file contents into a `String`.
-    pub fn read_file_contents(&self, file_path: &Path) -> eyre::Result<String> {
-        let file = File::open(file_path)?;
-        let mut contents = String::new_in(&self.bump);
-
-        for line in std::io::BufReader::new(file).lines() {
-            contents.push_str(&line?);
-            contents.push('\n');
-        }
+    /// Resets if needed the bumpalo allocator
+    pub fn check_and_reset_bump(&mut self) {
+        self.bump.reset();
+    }
 
-        Ok(contents)
+    /// Read the file contents into a `String`.
+    pub fn read_file_contents(&self, file_path: &Path) -> eyre::Result<std::string::String> {
+        let file_contents = std::fs::read_to_string(file_path)?;
+        Ok(file_contents)
     }
 
     /// Checks if the file contents have any classes.
@@ -167,10 +165,10 @@ impl RustyWind {
             .collect_in(&self.bump);
 
         // sorted varaints
-        let mut sorted_variant_classes = Vec::new_in(&bump);
+        let mut sorted_variant_classes = Vec::new_in(bump);
         for key in VARIANTS.iter() {
             let (mut sorted_classes, new_custom_classes) = self.sort_variant_classes(
-                variants.remove(key).unwrap_or_else(|| Vec::new_in(&bump)),
+                variants.remove(key).unwrap_or_else(|| Vec::new_in(bump)),
                 custom_classes,
                 key.len() + 1,
             );