dev-ruby/countdownlatch: enable ruby40

Signed-off-by: Hans de Graaff <graaff@gentoo.org>

dev-ruby/countdownlatch/countdownlatch-1.0.0-r2.ebuild

@@ -1,8 +1,9 @@
-# Copyright 1999-2024 Gentoo Authors
+# Copyright 1999-2025 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33 ruby34"
+
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
 
 RUBY_FAKEGEM_TASK_TEST="test"
 RUBY_FAKEGEM_TASK_DOC=""
@@ -20,8 +21,11 @@ KEYWORDS="~amd64"
 
 IUSE="test"
 
-ruby_add_bdepend "test? ( dev-ruby/minitest )"
+ruby_add_bdepend "test? ( dev-ruby/minitest:5 )"
 
 all_ruby_prepare() {
 	sed -i -e '/bundler/ s:^:#:' Rakefile || die
+
+	sed -e '1igem "minitest", "~> 5.0"' \
+		-i spec/countdownlatch_spec.rb || die
 }