diff --git a/rubygem-ruby-shadow.spec b/rubygem-ruby-shadow.spec
index 890301b..54e6c96 100644
--- a/rubygem-ruby-shadow.spec
+++ b/rubygem-ruby-shadow.spec
@@ -2,13 +2,14 @@
 
 Name:           rubygem-%{gem_name}
 Version:        2.5.0
-Release:        6%{?dist}
+Release:        7%{?dist}
 Summary:        Ruby shadow password module
 License:        Public Domain
 URL:            https://github.com/apalmblad/ruby-shadow
 Source0:        http://rubygems.org/gems/%{gem_name}-%{version}.gem
 Source1:        https://raw.githubusercontent.com/apalmblad/ruby-shadow/master/test/basic_test.rb
 Patch0:         ruby-shadow-2.5.0-cflags.patch
+BuildRequires:  gcc
 BuildRequires:  ruby(release)
 BuildRequires:  rubygems-devel
 BuildRequires:  ruby-devel
@@ -82,6 +83,9 @@ popd
 %doc %{gem_instdir}/README.euc
 
 %changelog
+* Sun Jul 15 2018 Terje Rosten <terje.rosten@ntnu.no> - 2.5.0-7
+- Add C compiler
+
 * Sat Jul 14 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.5.0-6
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_29_Mass_Rebuild