diff --git a/rubygem-power_assert.spec b/rubygem-power_assert.spec
index 0234078..99ab505 100644
--- a/rubygem-power_assert.spec
+++ b/rubygem-power_assert.spec
@@ -18,12 +18,7 @@ BuildRequires:	rubygems-devel
 BuildRequires:	rubygem(test-unit)
 BuildRequires:	rubygem(byebug)
 BuildRequires:	rubygem(pry)
-
-%if 0%{?fedora} < 21
-Requires:	ruby(release)
-Requires:	ruby(rubygems)
-Provides:	rubygem(%{gem_name}) = %{version}
-%endif
+BuildRequires:	%{_bindir}/irb
 
 BuildArch:	noarch
 
@@ -96,6 +91,9 @@ popd
 %doc	%{gem_docdir}
 
 %changelog
+* Fri Jul 23 2021 Mamoru TASAKA <mtasaka@fedoraproject.org> - 1.2.0-203
+- BR: irb
+
 * Fri Jul 23 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.2.0-203
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_35_Mass_Rebuild