diff --git a/dev-ruby/minitest-mock/Manifest b/dev-ruby/minitest-mock/Manifest
new file mode 100644
index 0000000000000..9576a17ce69a0
--- /dev/null
+++ b/dev-ruby/minitest-mock/Manifest
@@ -0,0 +1 @@
+DIST minitest-mock-5.27.0.gem 38400 BLAKE2B e8cf97394aea902ad77203bb50514e1980c6a82e7e70ee7083b696db4868be4248daa3df42fb58a11fafb2b529f601578149ca80c1872df281198ddb54f2f1df SHA512 ee36c044770066ff3e746856009c7ae5c90d0b7f9eae011c130c08222183ea590109f82c21c2d32d261af6f9984e410a7676eb078d0337a80780ec2b761b9708
diff --git a/dev-ruby/minitest-mock/metadata.xml b/dev-ruby/minitest-mock/metadata.xml
new file mode 100644
index 0000000000000..3d9ef2a3c5690
--- /dev/null
+++ b/dev-ruby/minitest-mock/metadata.xml
@@ -0,0 +1,9 @@
+<?xml version = '1.0' encoding = 'UTF-8'?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project"><email>ruby@gentoo.org</email></maintainer>
+  <upstream>
+    <remote-id type="github">minitest/minitest-mock</remote-id>
+    <remote-id type="rubygems">minitest-mock</remote-id>
+  </upstream>
+</pkgmetadata>
diff --git a/dev-ruby/minitest-mock/minitest-mock-5.27.0.ebuild b/dev-ruby/minitest-mock/minitest-mock-5.27.0.ebuild
new file mode 100644
index 0000000000000..9b15beb297603
--- /dev/null
+++ b/dev-ruby/minitest-mock/minitest-mock-5.27.0.ebuild
@@ -0,0 +1,31 @@
+# Copyright 1999-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+USE_RUBY="ruby32 ruby33 ruby34 ruby40"
+
+RUBY_FAKEGEM_EXTRADOC="History.rdoc README.rdoc"
+
+inherit ruby-fakegem
+
+DESCRIPTION="A tiny mock and stub object framework for minitest."
+HOMEPAGE="https://minite.st/"
+
+LICENSE="MIT"
+SLOT="$(ver_cut 1)"
+KEYWORDS="~amd64"
+IUSE="test"
+
+ruby_add_bdepend "test? (
+	dev-ruby/minitest:6
+)"
+
+all_ruby_prepare() {
+	sed -e '1igem "minitest", "~> 6.0"' \
+		-i test/minitest/test_minitest_mock.rb || die
+}
+
+each_ruby_test() {
+	${RUBY} -Ilib:. -e 'Dir["test/**/test_*.rb"].each { |f| require f }' || die
+}