diff --git a/src/css.rs b/src/css.rs
index 68e3725..b91f94e 100644
--- a/src/css.rs
+++ b/src/css.rs
@@ -1,8 +1,7 @@
 //! # Convert from SCSS AST to CSS
 use crate::{RuleSet, Selector, Stmt, Style, StyleSheet};
-// use crate::common::AtRule;
 use std::fmt;
-use std::io;
+use std::io::{self, Write};
 
 #[derive(Debug, Clone)]
 pub enum Toplevel {
@@ -121,7 +120,7 @@ impl Css {
         self
     }
 
-    pub fn pretty_print<W: std::io::Write>(self, buf: &mut W) -> io::Result<()> {
+    pub fn pretty_print<W: Write>(self, buf: &mut W) -> io::Result<()> {
         for block in self.blocks {
             match block {
                 Toplevel::RuleSet(selector, styles) => {
diff --git a/src/imports.rs b/src/imports.rs
index a13e2ef..28d74e0 100644
--- a/src/imports.rs
+++ b/src/imports.rs
@@ -1,5 +1,6 @@
 use crate::common::Scope;
 use crate::{Stmt, StyleSheet};
+use std::ffi::OsStr;
 use std::path::Path;
 
 pub fn import<P: AsRef<Path>>(name: P) -> (Vec<Stmt>, Scope) {
@@ -7,7 +8,7 @@ pub fn import<P: AsRef<Path>>(name: P) -> (Vec<Stmt>, Scope) {
     let mut scope = Scope::new();
     let path = name.as_ref().to_path_buf();
     let name = path.file_name().unwrap();
-    if path.extension() == Some(std::ffi::OsStr::new(".css")) {
+    if path.extension() == Some(OsStr::new(".css")) {
         // || name.starts_with("http://") || name.starts_with("https://") {
         todo!("handle css imports")
     }
diff --git a/src/main.rs b/src/main.rs
index 5303787..a43100b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -28,7 +28,7 @@
 // todo! handle erroring on styles at the toplevel
 use std::fmt::{self, Display};
 use std::fs;
-use std::io;
+use std::io::{self, Write, BufWriter, stdout};
 use std::iter::{Iterator, Peekable};
 use std::path::Path;
 
@@ -225,16 +225,16 @@ impl StyleSheet {
     /// to pure CSS
     ///
     /// Used mainly in debugging, but can at times be useful
-    pub fn pretty_print<W: std::io::Write>(&self, buf: W) -> io::Result<()> {
+    pub fn pretty_print<W: Write>(&self, buf: W) -> io::Result<()> {
         PrettyPrinter::new(buf).pretty_print(self)
     }
 
-    fn pretty_print_selectors<W: std::io::Write>(&self, buf: W) -> io::Result<()> {
+    fn pretty_print_selectors<W: Write>(&self, buf: W) -> io::Result<()> {
         PrettyPrinter::new(buf).pretty_print_preserve_super_selectors(self)
     }
 
     /// Write the internal representation as CSS to `buf`
-    pub fn print_as_css<W: std::io::Write>(self, buf: &mut W) -> io::Result<()> {
+    pub fn print_as_css<W: Write>(self, buf: &mut W) -> io::Result<()> {
         Css::from_stylesheet(self).pretty_print(buf)
     }
 }
@@ -684,7 +684,7 @@ impl<'a> StyleSheetParser<'a> {
 }
 
 fn main() -> SassResult<()> {
-    let mut stdout = std::io::BufWriter::new(std::io::stdout());
+    let mut stdout = BufWriter::new(stdout());
     let mut args = std::env::args();
     args.next();
     for arg in args {
@@ -1205,7 +1205,7 @@ mod test_mixins {
 #[cfg(test)]
 mod test_imports {
     use super::*;
-    use std::io::Write;
+    use Write;
     use tempfile::Builder;
 
     macro_rules! test_import {