diff --git a/aoc2021/aoc2021_bench/benches/aoc2021_bench.rs b/aoc2021/aoc2021_bench/benches/aoc2021_bench.rs
index f4475d2..d781aac 100644
--- a/aoc2021/aoc2021_bench/benches/aoc2021_bench.rs
+++ b/aoc2021/aoc2021_bench/benches/aoc2021_bench.rs
@@ -3,11 +3,13 @@ use criterion::{criterion_group, criterion_main, Criterion};
 use aoc2021::day01;
 use aoc2021::day02;
 use aoc2021::day03;
+use aoc2021::day04;
 
 fn aoc2021_all(c: &mut Criterion) {
     c.bench_function("day01", |b| b.iter(|| day01::run().unwrap()));
     c.bench_function("day02", |b| b.iter(|| day02::run().unwrap()));
     c.bench_function("day03", |b| b.iter(|| day03::run().unwrap()));
+    c.bench_function("day04", |b| b.iter(|| day04::run().unwrap()));
 }
 
 criterion_group! {