diff --git a/source/main.rs b/source/main.rs
index 64f67b6..fb2165c 100644
--- a/source/main.rs
+++ b/source/main.rs
@@ -1,3 +1,5 @@
+use std::time::Instant;
+
 mod day_01;
 mod day_02;
 mod day_03;
@@ -7,10 +9,15 @@ fn main() -> color_eyre::Result<()> {
   color_eyre::install()?;
 
   println!("Advent of Code 2021");
+  let start = Instant::now();
+
   day_01::solve()?;
   day_02::solve()?;
   day_03::solve()?;
   day_04::solve()?;
 
+  let end = Instant::now();
+  println!("Runtime: {:#?}", end - start);
+
   Ok(())
 }