diff --git a/rust-byteorder.spec b/rust-byteorder.spec
index 0a170bb..d5a4292 100644
--- a/rust-byteorder.spec
+++ b/rust-byteorder.spec
@@ -6,7 +6,7 @@
 
 Name:           rust-%{crate}
 Version:        1.2.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Library for reading/writing numbers in big-endian and little-endian
 
 License:        Unlicense or MIT
@@ -60,6 +60,9 @@ which use %{crate} from crates.io.
 %{cargo_registry}/%{crate}-%{version}/
 
 %changelog
+* Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.1-4
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild
+
 * Mon Jan 08 2018 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 1.2.1-3
 - Rebuild for rust-packaging v5