diff --git a/Cargo.lock b/Cargo.lock
index 225a5a2..c0b6864 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3,131 +3,14 @@
 version = 4
 
 [[package]]
-name = "cfg-if"
-version = "1.0.0"
+name = "fastrand"
+version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
-
-[[package]]
-name = "getrandom"
-version = "0.2.15"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi",
-]
-
-[[package]]
-name = "libc"
-version = "0.2.171"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c19937216e9d3aa9956d9bb8dfc0b0c8beb6058fc4f7a4dc4d850edf86a237d6"
-
-[[package]]
-name = "ppv-lite86"
-version = "0.2.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
-dependencies = [
- "zerocopy",
-]
-
-[[package]]
-name = "proc-macro2"
-version = "1.0.94"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a31971752e70b8b2686d7e46ec17fb38dad4051d94024c88df49b667caea9c84"
-dependencies = [
- "unicode-ident",
-]
-
-[[package]]
-name = "quote"
-version = "1.0.40"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
-dependencies = [
- "proc-macro2",
-]
-
-[[package]]
-name = "rand"
-version = "0.8.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
-dependencies = [
- "libc",
- "rand_chacha",
- "rand_core",
-]
-
-[[package]]
-name = "rand_chacha"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
-dependencies = [
- "ppv-lite86",
- "rand_core",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.6.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
-dependencies = [
- "getrandom",
-]
+checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
 [[package]]
 name = "rpg"
 version = "1.0.0"
 dependencies = [
- "rand",
-]
-
-[[package]]
-name = "syn"
-version = "2.0.100"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b09a44accad81e1ba1cd74a32461ba89dee89095ba17b32f5d03683b1b1fc2a0"
-dependencies = [
- "proc-macro2",
- "quote",
- "unicode-ident",
-]
-
-[[package]]
-name = "unicode-ident"
-version = "1.0.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
-
-[[package]]
-name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
-
-[[package]]
-name = "zerocopy"
-version = "0.8.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2586fea28e186957ef732a5f8b3be2da217d65c5969d4b1e17f973ebbe876879"
-dependencies = [
- "zerocopy-derive",
-]
-
-[[package]]
-name = "zerocopy-derive"
-version = "0.8.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a996a8f63c5c4448cd959ac1bab0aaa3306ccfd060472f85943ee0750f0169be"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
+ "fastrand",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index a8762df..0842511 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -4,4 +4,4 @@ version = "1.0.0"
 edition = "2021"
 
 [dependencies]
-rand = "0.8"
+fastrand = "2.3.0"
diff --git a/src/main.rs b/src/main.rs
index 5f01f16..d92f9cc 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,49 +1,26 @@
-use rand::seq::SliceRandom;
-use rand::Rng;
 use std::env;
-use std::io::{BufRead, BufReader};
+
+fn get_argument() -> usize {
+    env::args()
+        .nth(1)
+        .and_then(|arg| arg.parse::<usize>().ok())
+        .unwrap_or_else(|| 10)
+}
 
 fn main() {
-    let num_pseudonyms: usize = {
-        let args: Vec<String> = env::args().collect();
-        if args.len() > 1 {
-            match args[1].parse::<usize>() {
-                Ok(num) => num,
-                Err(_) => {
-                    eprintln!("Le nombre de pseudonymes doit être un entier positif.");
-                    std::process::exit(1);
-                }
-            }
-        } else {
-            100
-        }
-    };
+    let num_pseudonyms = get_argument();
+    let adjectives: Vec<&str> = include_str!("../data/adjectives.txt").lines().collect();
+    let nouns: Vec<&str> = include_str!("../data/nouns.txt").lines().collect();
 
-    let adjectives: Vec<String> = {
-        BufReader::new(include_str!("../data/adjectives.txt").as_bytes())
-            .lines()
-            .filter_map(Result::ok)
-            .collect()
-    };
-
-    let nouns: Vec<String> = {
-        BufReader::new(include_str!("../data/nouns.txt").as_bytes())
-            .lines()
-            .filter_map(Result::ok)
-            .collect()
-    };
-
-    let mut rng = rand::thread_rng();
-    for _ in 0..num_pseudonyms {
-        let Some(adjective) = adjectives.choose(&mut rng) else {
-            eprintln!("Impossible de choisir un adjectif.");
-            std::process::exit(1);
-        };
-        let Some(noun) = nouns.choose(&mut rng) else {
-            eprintln!("Impossible de choisir un nom.");
-            std::process::exit(1);
-        };
-        let number: u32 = rng.gen_range(1..=999);
-        println!("{}", format!("{}-{}-{}", adjective, noun, number));
-    }
+    (0..num_pseudonyms).for_each(|_| {
+        println!(
+            "{}",
+            format!(
+                "{}-{}-{}",
+                &adjectives[fastrand::usize(0..adjectives.len())],
+                &nouns[fastrand::usize(0..nouns.len())],
+                fastrand::u32(0..1000)
+            )
+        )
+    });
 }