diff --git a/Cargo.toml b/Cargo.toml
index bc74f37..b3fd792 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,6 +2,7 @@
 name = "aoc_2018"
 version = "0.1.0"
 authors = ["Johannes <jschaef@mail.uni-paderborn.de>"]
+edition = "2018"
 
 [dependencies]
 regex = "1.1.0"
diff --git a/src/tasks/day01.rs b/src/tasks/day01.rs
index de58329..45dc2b1 100644
--- a/src/tasks/day01.rs
+++ b/src/tasks/day01.rs
@@ -1,5 +1,5 @@
 use std::collections::HashSet;
-use utils;
+use crate::utils;
 
 pub fn task1() {
     let frequency: i32 = utils::read_file("input/day01.txt")
diff --git a/src/tasks/day02.rs b/src/tasks/day02.rs
index 9f656f8..2316791 100644
--- a/src/tasks/day02.rs
+++ b/src/tasks/day02.rs
@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 use std::collections::HashSet;
-use utils;
+use crate::utils;
 
 pub fn task1() {
     let input = utils::read_file("input/day02.txt");
diff --git a/src/tasks/day03.rs b/src/tasks/day03.rs
index 4d68427..65a5495 100644
--- a/src/tasks/day03.rs
+++ b/src/tasks/day03.rs
@@ -1,6 +1,6 @@
 use regex::Regex;
 use std::collections::HashMap;
-use utils;
+use crate::utils;
 
 #[derive(PartialEq)]
 enum Use {
diff --git a/src/tasks/day04.rs b/src/tasks/day04.rs
index 0f34ad2..a79ca52 100644
--- a/src/tasks/day04.rs
+++ b/src/tasks/day04.rs
@@ -2,7 +2,7 @@ use chrono::prelude::*;
 use chrono::Duration;
 use chrono::NaiveDateTime;
 use std::collections::HashMap;
-use utils;
+use crate::utils;
 
 enum Activity {
     Starts(u32),
diff --git a/src/tasks/day05.rs b/src/tasks/day05.rs
index 0efc7b5..1b7c6c2 100644
--- a/src/tasks/day05.rs
+++ b/src/tasks/day05.rs
@@ -1,5 +1,5 @@
 use std::time::Instant;
-use utils;
+use crate::utils;
 
 pub fn task1() {
     let mut input = utils::read_file("input/day05.txt");
diff --git a/src/tasks/day06.rs b/src/tasks/day06.rs
index 28f7c14..0d5a7f6 100644
--- a/src/tasks/day06.rs
+++ b/src/tasks/day06.rs
@@ -1,4 +1,4 @@
-use utils;
+use crate::utils;
 
 pub fn task1() {
     use self::Bla::*;