diff --git a/src/app/settings.rs b/src/app/settings.rs
index 4358e126f1b..4aa64d337bc 100644
--- a/src/app/settings.rs
+++ b/src/app/settings.rs
@@ -1,5 +1,5 @@
 // Std
-#[allow(unused_imports)]
+#[allow(deprecated, unused_imports)]
 use std::ascii::AsciiExt;
 use std::str::FromStr;
 use std::ops::BitOr;
diff --git a/src/app/validator.rs b/src/app/validator.rs
index 6c297f6d5dd..1d8e80779bd 100644
--- a/src/app/validator.rs
+++ b/src/app/validator.rs
@@ -1,6 +1,6 @@
 // std
 use std::fmt::Display;
-#[allow(unused_imports)]
+#[allow(deprecated, unused_imports)]
 use std::ascii::AsciiExt;
 
 // Internal
diff --git a/src/args/settings.rs b/src/args/settings.rs
index f5e3e376ae8..864dd903039 100644
--- a/src/args/settings.rs
+++ b/src/args/settings.rs
@@ -1,5 +1,5 @@
 // Std
-#[allow(unused_imports)]
+#[allow(deprecated, unused_imports)]
 use std::ascii::AsciiExt;
 use std::str::FromStr;
 
diff --git a/src/completions/shell.rs b/src/completions/shell.rs
index 75b7d360b05..ceec9ff5f0b 100644
--- a/src/completions/shell.rs
+++ b/src/completions/shell.rs
@@ -1,4 +1,4 @@
-#[allow(unused_imports)]
+#[allow(deprecated, unused_imports)]
 use std::ascii::AsciiExt;
 use std::str::FromStr;
 use std::fmt;
diff --git a/src/completions/zsh.rs b/src/completions/zsh.rs
index 4c66ce4447f..5d23fd28422 100644
--- a/src/completions/zsh.rs
+++ b/src/completions/zsh.rs
@@ -1,6 +1,6 @@
 // Std
 use std::io::Write;
-#[allow(unused_imports)]
+#[allow(deprecated, unused_imports)]
 use std::ascii::AsciiExt;
 
 // Internal
diff --git a/src/macros.rs b/src/macros.rs
index e55554b853f..66778ffc0e4 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -314,7 +314,7 @@ macro_rules! arg_enum {
             type Err = String;
 
             fn from_str(s: &str) -> ::std::result::Result<Self,Self::Err> {
-                #[allow(unused_imports)]
+                #[allow(deprecated, unused_imports)]
                 use ::std::ascii::AsciiExt;
                 match s {
                     $(stringify!($v) |
diff --git a/tests/possible_values.rs b/tests/possible_values.rs
index 1bee9bf51f2..80772bd244d 100644
--- a/tests/possible_values.rs
+++ b/tests/possible_values.rs
@@ -3,7 +3,7 @@ extern crate regex;
 
 include!("../clap-test.rs");
 
-#[allow(unused_imports)]
+#[allow(deprecated, unused_imports)]
 use std::ascii::AsciiExt;
 
 use clap::{App, Arg, ErrorKind};