diff --git a/Cargo.toml b/Cargo.toml
index 2412c4b..b3d5aec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,6 +8,7 @@ license = "MIT"
 readme = "README.md"
 repository = "https://github.com/PistonDevelopers/freetype-rs.git"
 homepage = "https://github.com/PistonDevelopers/freetype-rs"
+edition = "2018"
 
 [lib]
 name = "freetype"
diff --git a/src/bitmap.rs b/src/bitmap.rs
index d34c612..361c14a 100644
--- a/src/bitmap.rs
+++ b/src/bitmap.rs
@@ -1,5 +1,5 @@
+use crate::{ffi, Error, FtResult};
 use std::slice;
-use {ffi, Error, FtResult};
 
 /// An enumeration type used to describe the format of pixels in a given bitmap. Note that
 /// additional formats may be added in the future.
diff --git a/src/bitmap_glyph.rs b/src/bitmap_glyph.rs
index f9085e8..93befb9 100644
--- a/src/bitmap_glyph.rs
+++ b/src/bitmap_glyph.rs
@@ -1,5 +1,5 @@
+use crate::{ffi, Bitmap};
 use std::ptr::null_mut;
-use {ffi, Bitmap};
 
 pub struct BitmapGlyph {
     library_raw: ffi::FT_Library,
diff --git a/src/error.rs b/src/error.rs
index f55b829..74baac0 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,4 +1,4 @@
-use ffi;
+use crate::ffi;
 use std::error;
 use std::fmt;
 
diff --git a/src/face.rs b/src/face.rs
index 8410d5b..a77ee01 100644
--- a/src/face.rs
+++ b/src/face.rs
@@ -4,7 +4,7 @@ use std::num::NonZeroU32;
 use std::rc::Rc;
 
 use crate::charmap::CharMap;
-use {ffi, FtResult, GlyphSlot, Matrix, Vector};
+use crate::{ffi, FtResult, GlyphSlot, Matrix, Vector};
 
 #[repr(u32)]
 #[derive(Copy, Clone)]
@@ -14,38 +14,38 @@ pub enum KerningMode {
     KerningUnscaled = ffi::FT_KERNING_UNSCALED,
 }
 
-bitflags! {
+bitflags::bitflags! {
     #[derive(Debug, Clone, Copy, PartialEq, Eq)]
     pub struct LoadFlag: i32 {
-        const DEFAULT                    = ::ffi::FT_LOAD_DEFAULT;
-        const NO_SCALE                   = ::ffi::FT_LOAD_NO_SCALE;
-        const NO_HINTING                 = ::ffi::FT_LOAD_NO_HINTING;
-        const RENDER                     = ::ffi::FT_LOAD_RENDER;
-        const NO_BITMAP                  = ::ffi::FT_LOAD_NO_BITMAP;
-        const VERTICAL_LAYOUT            = ::ffi::FT_LOAD_VERTICAL_LAYOUT;
-        const FORCE_AUTOHINT             = ::ffi::FT_LOAD_FORCE_AUTOHINT;
-        const CROP_BITMAP                = ::ffi::FT_LOAD_CROP_BITMAP;
-        const PEDANTIC                   = ::ffi::FT_LOAD_PEDANTIC;
-        const IGNORE_GLOBAL_ADVANCE_WITH = ::ffi::FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH;
-        const NO_RECURSE                 = ::ffi::FT_LOAD_NO_RECURSE;
-        const IGNORE_TRANSFORM           = ::ffi::FT_LOAD_IGNORE_TRANSFORM;
-        const MONOCHROME                 = ::ffi::FT_LOAD_MONOCHROME;
-        const LINEAR_DESIGN              = ::ffi::FT_LOAD_LINEAR_DESIGN;
-        const NO_AUTOHINT                = ::ffi::FT_LOAD_NO_AUTOHINT;
-        const TARGET_NORMAL              = ::ffi::FT_LOAD_TARGET_NORMAL;
-        const TARGET_LIGHT               = ::ffi::FT_LOAD_TARGET_LIGHT;
-        const TARGET_MONO                = ::ffi::FT_LOAD_TARGET_MONO;
-        const TARGET_LCD                 = ::ffi::FT_LOAD_TARGET_LCD;
-        const TARGET_LCD_V               = ::ffi::FT_LOAD_TARGET_LCD_V;
-        const COLOR                      = ::ffi::FT_LOAD_COLOR;
+        const DEFAULT                    = crate::ffi::FT_LOAD_DEFAULT;
+        const NO_SCALE                   = crate::ffi::FT_LOAD_NO_SCALE;
+        const NO_HINTING                 = crate::ffi::FT_LOAD_NO_HINTING;
+        const RENDER                     = crate::ffi::FT_LOAD_RENDER;
+        const NO_BITMAP                  = crate::ffi::FT_LOAD_NO_BITMAP;
+        const VERTICAL_LAYOUT            = crate::ffi::FT_LOAD_VERTICAL_LAYOUT;
+        const FORCE_AUTOHINT             = crate::ffi::FT_LOAD_FORCE_AUTOHINT;
+        const CROP_BITMAP                = crate::ffi::FT_LOAD_CROP_BITMAP;
+        const PEDANTIC                   = crate::ffi::FT_LOAD_PEDANTIC;
+        const IGNORE_GLOBAL_ADVANCE_WITH = crate::ffi::FT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH;
+        const NO_RECURSE                 = crate::ffi::FT_LOAD_NO_RECURSE;
+        const IGNORE_TRANSFORM           = crate::ffi::FT_LOAD_IGNORE_TRANSFORM;
+        const MONOCHROME                 = crate::ffi::FT_LOAD_MONOCHROME;
+        const LINEAR_DESIGN              = crate::ffi::FT_LOAD_LINEAR_DESIGN;
+        const NO_AUTOHINT                = crate::ffi::FT_LOAD_NO_AUTOHINT;
+        const TARGET_NORMAL              = crate::ffi::FT_LOAD_TARGET_NORMAL;
+        const TARGET_LIGHT               = crate::ffi::FT_LOAD_TARGET_LIGHT;
+        const TARGET_MONO                = crate::ffi::FT_LOAD_TARGET_MONO;
+        const TARGET_LCD                 = crate::ffi::FT_LOAD_TARGET_LCD;
+        const TARGET_LCD_V               = crate::ffi::FT_LOAD_TARGET_LCD_V;
+        const COLOR                      = crate::ffi::FT_LOAD_COLOR;
     }
 }
 
-bitflags! {
+bitflags::bitflags! {
     #[derive(Debug, Clone, Copy, PartialEq, Eq)]
     pub struct StyleFlag: ffi::FT_Long {
-        const BOLD   = ::ffi::FT_STYLE_FLAG_BOLD;
-        const ITALIC = ::ffi::FT_STYLE_FLAG_ITALIC;
+        const BOLD   = crate::ffi::FT_STYLE_FLAG_BOLD;
+        const ITALIC = crate::ffi::FT_STYLE_FLAG_ITALIC;
     }
 }
 
diff --git a/src/glyph.rs b/src/glyph.rs
index 9c8c6d3..ab2122e 100644
--- a/src/glyph.rs
+++ b/src/glyph.rs
@@ -1,5 +1,5 @@
+use crate::{ffi, BBox, BitmapGlyph, FtResult, Matrix, RenderMode, Stroker, Vector};
 use std::ptr::null_mut;
-use {ffi, BBox, BitmapGlyph, FtResult, Matrix, RenderMode, Stroker, Vector};
 
 /// Represents a retrieved glyph from the library
 ///
diff --git a/src/glyph_slot.rs b/src/glyph_slot.rs
index b3f255e..232e09b 100644
--- a/src/glyph_slot.rs
+++ b/src/glyph_slot.rs
@@ -1,5 +1,5 @@
+use crate::{ffi, Bitmap, FtResult, Glyph, GlyphMetrics, Outline, RenderMode, Vector};
 use std::ptr::null_mut;
-use {ffi, Bitmap, FtResult, Glyph, GlyphMetrics, Outline, RenderMode, Vector};
 
 /// A description of a given subglyph returned by `GlyphSlot::get_subglyph_info`
 /// function.
diff --git a/src/lib.rs b/src/lib.rs
index 0b4f33d..93d675c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -38,22 +38,19 @@
 
 #![deny(missing_copy_implementations)]
 
-#[macro_use]
-extern crate bitflags;
-pub extern crate freetype_sys;
-extern crate libc;
+pub use freetype_sys;
 
-pub use bitmap::Bitmap;
-pub use bitmap_glyph::BitmapGlyph;
-pub use error::{Error, FtResult};
-pub use face::Face;
+pub use crate::bitmap::Bitmap;
+pub use crate::bitmap_glyph::BitmapGlyph;
+pub use crate::error::{Error, FtResult};
+pub use crate::face::Face;
+pub use crate::glyph::Glyph;
+pub use crate::glyph_slot::GlyphSlot;
+pub use crate::library::{LcdFilter, Library};
+pub use crate::outline::Outline;
+pub use crate::render_mode::RenderMode;
+pub use crate::stroker::{Stroker, StrokerLineCap, StrokerLineJoin};
 pub use freetype_sys as ffi;
-pub use glyph::Glyph;
-pub use glyph_slot::GlyphSlot;
-pub use library::{LcdFilter, Library};
-pub use outline::Outline;
-pub use render_mode::RenderMode;
-pub use stroker::{Stroker, StrokerLineCap, StrokerLineJoin};
 
 pub mod bitmap;
 pub mod bitmap_glyph;
diff --git a/src/library.rs b/src/library.rs
index 86fa1c1..e940cf6 100644
--- a/src/library.rs
+++ b/src/library.rs
@@ -1,10 +1,10 @@
-use ffi;
+use crate::ffi;
+use crate::{Error, Face, FtResult, Stroker};
 use libc::{self, c_long, c_void, size_t};
 use std::borrow::Borrow;
 use std::ffi::{CString, OsStr};
 use std::ptr::null_mut;
 use std::rc::Rc;
-use {Error, Face, FtResult, Stroker};
 
 extern "C" fn alloc_library(_memory: ffi::FT_Memory, size: c_long) -> *mut c_void {
     unsafe { libc::malloc(size as size_t) }
diff --git a/src/outline.rs b/src/outline.rs
index 9ca54b9..b13cf69 100644
--- a/src/outline.rs
+++ b/src/outline.rs
@@ -1,7 +1,7 @@
+use crate::{ffi, Vector};
 use libc::{c_char, c_short};
 use std::marker::PhantomData;
 use std::slice;
-use {ffi, Vector};
 
 #[derive(Copy, Clone)]
 pub enum Curve {
diff --git a/src/render_mode.rs b/src/render_mode.rs
index c446252..092472d 100644
--- a/src/render_mode.rs
+++ b/src/render_mode.rs
@@ -1,4 +1,4 @@
-use ffi;
+use crate::ffi;
 
 #[repr(u32)]
 #[derive(Copy, Clone)]
diff --git a/src/stroker.rs b/src/stroker.rs
index 68aaba9..b46fe21 100644
--- a/src/stroker.rs
+++ b/src/stroker.rs
@@ -1,4 +1,4 @@
-use ffi;
+use crate::ffi;
 
 #[repr(u32)]
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]
diff --git a/src/tt_os2.rs b/src/tt_os2.rs
index cf2bd56..9776da1 100644
--- a/src/tt_os2.rs
+++ b/src/tt_os2.rs
@@ -1,5 +1,5 @@
-use face::Face;
-use ffi;
+use crate::face::Face;
+use crate::ffi;
 
 #[derive(Copy, Clone)]
 pub struct TrueTypeOS2Table {
@@ -130,7 +130,7 @@ impl TrueTypeOS2Table {
 mod tests {
     use std::path::PathBuf;
 
-    use library::Library;
+    use crate::library::Library;
 
     use super::*;
 
diff --git a/src/tt_postscript.rs b/src/tt_postscript.rs
index 5ecbea4..8b99815 100644
--- a/src/tt_postscript.rs
+++ b/src/tt_postscript.rs
@@ -1,5 +1,5 @@
-use face::Face;
-use ffi;
+use crate::face::Face;
+use crate::ffi;
 
 #[derive(Copy, Clone)]
 pub struct TrueTypePostscriptTable {