diff --git a/0001-Allow-the-deprecated-AsciiExt.patch b/0001-Allow-the-deprecated-AsciiExt.patch
new file mode 100644
index 0000000..836e22f
--- /dev/null
+++ b/0001-Allow-the-deprecated-AsciiExt.patch
@@ -0,0 +1,36 @@
+From dfd4936eb09ecc6cd5c5d79254aa6fdfe35a4667 Mon Sep 17 00:00:00 2001
+From: Josh Stone <jistone@redhat.com>
+Date: Wed, 16 May 2018 16:29:24 -0700
+Subject: [PATCH] Allow the deprecated AsciiExt
+
+---
+ src/ascii.rs | 2 +-
+ src/lib.rs   | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/ascii.rs b/src/ascii.rs
+index 745ea04bbcec..885e2703fed9 100644
+--- a/src/ascii.rs
++++ b/src/ascii.rs
+@@ -1,4 +1,4 @@
+-#[allow(unused)]
++#[allow(deprecated, unused)]
+ use std::ascii::AsciiExt;
+ #[cfg(__unicase__iter_cmp)]
+ use std::cmp::Ordering;
+diff --git a/src/lib.rs b/src/lib.rs
+index 5290d50cbde7..5998fb1b8ccc 100644
+--- a/src/lib.rs
++++ b/src/lib.rs
+@@ -111,7 +111,7 @@ impl<S: AsRef<str>> UniCase<S> {
+     ///
+     /// Note: This scans the text to determine if it is all ASCII or not.
+     pub fn new(s: S) -> UniCase<S> {
+-        #[allow(unused)]
++        #[allow(deprecated, unused)]
+         use std::ascii::AsciiExt;
+         if s.as_ref().is_ascii() {
+             UniCase(Encoding::Ascii(Ascii(s)))
+-- 
+2.17.0
+
diff --git a/rust-unicase.spec b/rust-unicase.spec
index 0fb9742..dc3c458 100644
--- a/rust-unicase.spec
+++ b/rust-unicase.spec
@@ -6,13 +6,16 @@
 
 Name:           rust-%{crate}
 Version:        2.1.0
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Case-insensitive wrapper around strings
 
 License:        MIT or ASL 2.0
 URL:            https://crates.io/crates/unicase
 Source0:        https://crates.io/api/v1/crates/%{crate}/%{version}/download#/%{crate}-%{version}.crate
 
+# https://github.com/seanmonstar/unicase/pull/24
+Patch1:         0001-Allow-the-deprecated-AsciiExt.patch
+
 ExclusiveArch:  %{rust_arches}
 
 BuildRequires:  rust-packaging
@@ -54,6 +57,9 @@ which use %{crate} from crates.io.
 %exclude %{cargo_registry}/%{crate}-%{version}/scripts
 
 %changelog
+* Thu May 17 2018 Josh Stone <jistone@redhat.com> - 2.1.0-4
+- Fix FTBFS from deprecated AsciiExt
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.1.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild