diff --git a/CHANGELOG.md b/CHANGELOG.md
index c47a0ea..e6cf961 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ### v0.20
   - No actual API change, but updated to Rust2018 and synced with cgmath 0.17
-  - Uses latest versions of rand and approx for compatibility with other libraries
+  - Uses the latest versions of rand and approx for compatibility with other libraries
 
 ### v0.19
   - Updated version of num library to 0.2
diff --git a/Cargo.toml b/Cargo.toml
index 994c2b7..73d7b31 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,6 @@ name = "collision"
 
 [dependencies]
 rand = "0.8.4"
-approx = "0.4" # Only for the macros; for all other instances use the re-exported cgmath ones.
 cgmath = "0.18.0"
 serde = { version = "1.0.126", optional = true, features = ["derive"] }
 bit-set = "0.5.2"
diff --git a/README.md b/README.md
index f4f51d8..fc16234 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ at your option.
 
 ## Contributing
 
-Use [CONTRIBUTING.md](https://github.com/rustgd/collision-rs/blob/master/CONTRIBUTING.md) for futher information.
+Use [CONTRIBUTING.md](https://github.com/rustgd/collision-rs/blob/master/CONTRIBUTING.md) for further information.
 
 Pull requests are most welcome, especially in the realm of performance
 enhancements and fixing any mistakes. Unit tests and benchmarks are also 
diff --git a/benches/dbvt.rs b/benches/dbvt.rs
index f0aa4fe..fe16090 100644
--- a/benches/dbvt.rs
+++ b/benches/dbvt.rs
@@ -1,8 +1,5 @@
 #![feature(test)]
 
-extern crate cgmath;
-extern crate collision;
-extern crate rand;
 extern crate test;
 
 use cgmath::prelude::*;
diff --git a/benches/polyhedron.rs b/benches/polyhedron.rs
index 0bb4395..4b53594 100644
--- a/benches/polyhedron.rs
+++ b/benches/polyhedron.rs
@@ -1,9 +1,5 @@
 #![feature(test)]
 
-extern crate cgmath;
-extern crate collision;
-extern crate genmesh;
-extern crate rand;
 extern crate test;
 
 use cgmath::prelude::*;
diff --git a/src/algorithm/minkowski/epa/epa2d.rs b/src/algorithm/minkowski/epa/epa2d.rs
index 26dc6ee..d9b8202 100644
--- a/src/algorithm/minkowski/epa/epa2d.rs
+++ b/src/algorithm/minkowski/epa/epa2d.rs
@@ -1,6 +1,6 @@
 use std::marker;
 
-use approx::assert_ulps_ne;
+use cgmath::assert_ulps_ne;
 use cgmath::num_traits::NumCast;
 use cgmath::prelude::*;
 use cgmath::{BaseFloat, Point2, Vector2};
@@ -157,7 +157,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Basis2, Decomposed, Point2, Rad, Rotation2, Vector2};
 
     use super::*;
diff --git a/src/algorithm/minkowski/epa/epa3d.rs b/src/algorithm/minkowski/epa/epa3d.rs
index 46a82c7..489a357 100644
--- a/src/algorithm/minkowski/epa/epa3d.rs
+++ b/src/algorithm/minkowski/epa/epa3d.rs
@@ -220,7 +220,7 @@ fn remove_or_add_edge(edges: &mut Vec<(usize, usize)>, edge: (usize, usize)) {
 
 #[cfg(test)]
 mod tests {
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Decomposed, Quaternion, Rad, Vector3};
 
     use super::*;
diff --git a/src/algorithm/minkowski/gjk/mod.rs b/src/algorithm/minkowski/gjk/mod.rs
index ab97d35..095b5d8 100644
--- a/src/algorithm/minkowski/gjk/mod.rs
+++ b/src/algorithm/minkowski/gjk/mod.rs
@@ -15,7 +15,7 @@ use self::simplex::{Simplex, SimplexProcessor2, SimplexProcessor3};
 use crate::algorithm::minkowski::{SupportPoint, EPA, EPA2, EPA3};
 use crate::prelude::*;
 use crate::{CollisionStrategy, Contact};
-use approx::ulps_eq;
+use cgmath::ulps_eq;
 
 mod simplex;
 
@@ -590,7 +590,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{
         Basis2, Decomposed, Point2, Point3, Quaternion, Rad, Rotation2, Rotation3, Vector2, Vector3,
     };
diff --git a/src/algorithm/minkowski/gjk/simplex/simplex2d.rs b/src/algorithm/minkowski/gjk/simplex/simplex2d.rs
index 22874e2..d8c6a17 100644
--- a/src/algorithm/minkowski/gjk/simplex/simplex2d.rs
+++ b/src/algorithm/minkowski/gjk/simplex/simplex2d.rs
@@ -1,8 +1,8 @@
 use std::marker;
 use std::ops::Neg;
 
-use approx::ulps_eq;
 use cgmath::prelude::*;
+use cgmath::ulps_eq;
 use cgmath::{BaseFloat, Point2, Vector2};
 
 use super::{Simplex, SimplexProcessor};
@@ -101,7 +101,7 @@ mod tests {
 
     use super::*;
     use crate::algorithm::minkowski::SupportPoint;
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use smallvec::smallvec;
 
     #[test]
diff --git a/src/algorithm/minkowski/gjk/simplex/simplex3d.rs b/src/algorithm/minkowski/gjk/simplex/simplex3d.rs
index 3925240..0c0fd7a 100644
--- a/src/algorithm/minkowski/gjk/simplex/simplex3d.rs
+++ b/src/algorithm/minkowski/gjk/simplex/simplex3d.rs
@@ -1,9 +1,9 @@
 use std::marker;
 use std::ops::Neg;
 
-use approx::ulps_eq;
 use cgmath::num_traits::cast;
 use cgmath::prelude::*;
+use cgmath::ulps_eq;
 use cgmath::{BaseFloat, Point3, Vector3};
 
 use super::{Simplex, SimplexProcessor};
@@ -223,7 +223,7 @@ fn check_side<S>(
 mod tests {
     use std::ops::Neg;
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Point3, Vector3};
     use smallvec::smallvec;
 
diff --git a/src/plane.rs b/src/plane.rs
index cde67b1..9c9dbdc 100644
--- a/src/plane.rs
+++ b/src/plane.rs
@@ -1,7 +1,7 @@
 use std::fmt;
 
-use approx::{ulps_eq, ulps_ne};
 use cgmath::prelude::*;
+use cgmath::{ulps_eq, ulps_ne};
 use cgmath::{AbsDiffEq, RelativeEq, UlpsEq};
 use cgmath::{BaseFloat, Point3, Vector3, Vector4};
 
diff --git a/src/primitive/capsule.rs b/src/primitive/capsule.rs
index 4c69cce..d16d79b 100644
--- a/src/primitive/capsule.rs
+++ b/src/primitive/capsule.rs
@@ -201,7 +201,7 @@ where
 mod tests {
     use std;
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Decomposed, Quaternion, Rad, Vector3};
 
     use super::*;
diff --git a/src/primitive/circle.rs b/src/primitive/circle.rs
index 3d297ab..8c61452 100644
--- a/src/primitive/circle.rs
+++ b/src/primitive/circle.rs
@@ -93,7 +93,7 @@ mod tests {
 
     use crate::prelude::*;
     use crate::Ray2;
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Basis2, Decomposed, Point2, Rad, Rotation2, Vector2};
 
     use super::*;
diff --git a/src/primitive/cuboid.rs b/src/primitive/cuboid.rs
index 44efa85..cfbcf06 100644
--- a/src/primitive/cuboid.rs
+++ b/src/primitive/cuboid.rs
@@ -214,7 +214,7 @@ where
 #[cfg(test)]
 mod tests {
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Decomposed, Point3, Quaternion, Rad, Vector3};
 
     use super::*;
diff --git a/src/primitive/cylinder.rs b/src/primitive/cylinder.rs
index 1c04fca..aebddf6 100644
--- a/src/primitive/cylinder.rs
+++ b/src/primitive/cylinder.rs
@@ -231,7 +231,7 @@ where
 mod tests {
     use std;
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Decomposed, Quaternion, Rad, Vector3};
 
     use super::*;
diff --git a/src/primitive/particle.rs b/src/primitive/particle.rs
index e668f37..82e39c5 100644
--- a/src/primitive/particle.rs
+++ b/src/primitive/particle.rs
@@ -161,7 +161,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::prelude::*;
     use cgmath::{Basis2, Decomposed, Point2, Rad, Vector2};
 
diff --git a/src/primitive/polygon.rs b/src/primitive/polygon.rs
index 513905a..bc22b44 100644
--- a/src/primitive/polygon.rs
+++ b/src/primitive/polygon.rs
@@ -196,7 +196,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Basis2, Decomposed, Point2, Rad, Vector2};
 
     use super::*;
diff --git a/src/primitive/polyhedron.rs b/src/primitive/polyhedron.rs
index bec4d35..0453c56 100644
--- a/src/primitive/polyhedron.rs
+++ b/src/primitive/polyhedron.rs
@@ -576,7 +576,7 @@ where
 #[cfg(test)]
 mod tests {
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::prelude::*;
     use cgmath::{Decomposed, Point3, Quaternion, Rad, Vector3};
 
diff --git a/src/primitive/rectangle.rs b/src/primitive/rectangle.rs
index 2c28b1d..e24bdf2 100644
--- a/src/primitive/rectangle.rs
+++ b/src/primitive/rectangle.rs
@@ -184,7 +184,7 @@ where
 
 #[cfg(test)]
 mod tests {
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Basis2, Decomposed, Point2, Rad, Vector2};
 
     use super::*;
diff --git a/src/primitive/sphere.rs b/src/primitive/sphere.rs
index 778db5b..557dfa3 100644
--- a/src/primitive/sphere.rs
+++ b/src/primitive/sphere.rs
@@ -101,7 +101,7 @@ where
 mod tests {
     use std;
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Decomposed, Point3, Quaternion, Rad, Rotation3, Vector3};
 
     use super::*;
diff --git a/src/primitive/util.rs b/src/primitive/util.rs
index a887fcb..3435c6a 100644
--- a/src/primitive/util.rs
+++ b/src/primitive/util.rs
@@ -138,7 +138,7 @@ where
 mod tests {
     use std;
 
-    use approx::assert_ulps_eq;
+    use cgmath::assert_ulps_eq;
     use cgmath::{Basis2, Decomposed, Point2, Rad, Rotation2, Vector2};
 
     use super::*;
diff --git a/tests/aabb.rs b/tests/aabb.rs
index 5f2d9be..7ae959d 100644
--- a/tests/aabb.rs
+++ b/tests/aabb.rs
@@ -1,6 +1,3 @@
-extern crate cgmath;
-extern crate collision;
-
 use cgmath::InnerSpace;
 use cgmath::{Point2, Point3};
 use cgmath::{Vector2, Vector3};
diff --git a/tests/bound.rs b/tests/bound.rs
index dd9ca43..22b0dd7 100644
--- a/tests/bound.rs
+++ b/tests/bound.rs
@@ -1,5 +1,3 @@
-extern crate collision;
-
 use collision::PlaneBound;
 
 fn _box(_: Box<dyn PlaneBound<f32>>) {}
diff --git a/tests/dbvt.rs b/tests/dbvt.rs
index 2da3fc3..b8c33a9 100644
--- a/tests/dbvt.rs
+++ b/tests/dbvt.rs
@@ -1,7 +1,3 @@
-extern crate cgmath;
-extern crate collision;
-extern crate rand;
-
 use cgmath::prelude::*;
 use cgmath::{Deg, PerspectiveFov, Point2, Point3, Vector2, Vector3};
 use collision::dbvt::*;
diff --git a/tests/frustum.rs b/tests/frustum.rs
index a7cdf7b..59cae39 100644
--- a/tests/frustum.rs
+++ b/tests/frustum.rs
@@ -1,6 +1,3 @@
-extern crate cgmath;
-extern crate collision;
-
 use cgmath::{PerspectiveFov, Point3, Rad};
 use collision::{Projection, Relation, Sphere};
 
diff --git a/tests/plane.rs b/tests/plane.rs
index f120e70..672fd8b 100644
--- a/tests/plane.rs
+++ b/tests/plane.rs
@@ -1,8 +1,3 @@
-extern crate approx;
-
-extern crate cgmath;
-extern crate collision;
-
 use cgmath::*;
 use collision::*;
 
diff --git a/tests/point.rs b/tests/point.rs
index dff23a8..0214729 100644
--- a/tests/point.rs
+++ b/tests/point.rs
@@ -1,9 +1,4 @@
-#[macro_use]
-extern crate approx;
-
-extern crate cgmath;
-extern crate collision;
-
+use cgmath::assert_ulps_eq;
 use cgmath::{Point3, Vector3};
 use collision::{Continuous, Plane, PlaneBound, Ray3, Relation};
 
diff --git a/tests/serde.rs b/tests/serde.rs
index ea7bbc3..e426211 100644
--- a/tests/serde.rs
+++ b/tests/serde.rs
@@ -1,8 +1,5 @@
 #![cfg(feature = "serde")]
 
-extern crate cgmath;
-extern crate serde;
-
 use cgmath::Point1;
 use serde::Serialize;
 
diff --git a/tests/sphere.rs b/tests/sphere.rs
index a7f6357..307c6e8 100644
--- a/tests/sphere.rs
+++ b/tests/sphere.rs
@@ -1,8 +1,3 @@
-extern crate approx;
-
-extern crate cgmath;
-extern crate collision;
-
 use cgmath::*;
 use collision::*;