diff --git a/dev-ruby/lumberjack/Manifest b/dev-ruby/lumberjack/Manifest
index 906e113710828..fdb9a6d36f6e4 100644
--- a/dev-ruby/lumberjack/Manifest
+++ b/dev-ruby/lumberjack/Manifest
@@ -3,3 +3,4 @@ DIST lumberjack-1.3.1.tar.gz 55608 BLAKE2B cd9bf18c8485e150883da3f828d2f547f4dd5
 DIST lumberjack-1.3.2.tar.gz 55793 BLAKE2B d1f51dc85e8c06423ddca6a999820d812fab66e96358c47ce78eb7d40edc8b15f72a947bca3d194d1c039fa68b974e44ce600c0cbbba76cc6e052ff520b44e36 SHA512 0f9f590b5822d634e0dc02441f7a1ee8847937ef09a3180e21a250bfc4e4ae71722e2886fa3a163168a261e025eb17b5a70de7eb5da16cef30571fa54af0c407
 DIST lumberjack-1.3.3.tar.gz 56369 BLAKE2B ed62b675bea187dbe8ec0d9378f56aaf0c5bb05d78686426ce9e9bd61c12463e05fc59e899ef1ef1c77388fc0f22ce3c8a9a061b4394b7d2ff58186227959e6e SHA512 4ee2772a36b0c0219ebd21a91b1f75410a99387b5b687dc915aff01e967b5eb8a60986bfd019efcfdb1fc375e999c8d1fe0505c5590988e3baa30acce283d156
 DIST lumberjack-1.3.4.tar.gz 56536 BLAKE2B 55f101e1b4506314d0517ad5242b38cd8fec660222a509276ad7a400a366047aaef6db000f937f113f7e76c6f76beb608b895b45ecc822fed7ddd9e27fb6e8b0 SHA512 ba99ea334d65b0dcdb73a268db464d922f27e12fd84d17a277d53f4a8ac75adb62df7cfcd9be269437be3e92b9d4fa265d133a76d2a30f0d73d6605b21069357
+DIST lumberjack-1.4.0.tar.gz 59199 BLAKE2B ea60a911884d024ff8deb8b7d9b7079ca411e0eee39ea42195c2110dea936bcf123ea7bdefbf6c20d5ae81cca51df4d91afb171bce72de1e77f3b618dee3db36 SHA512 8ebb31fd5a223bf2f94e144ee7f4553a3a0161ea2698044a93184a586fa3ea4dd0a35837f2efb9050c749b06bb6f298456918b5e4cfcd5e92a765be086fa839d
diff --git a/dev-ruby/lumberjack/lumberjack-1.4.0.ebuild b/dev-ruby/lumberjack/lumberjack-1.4.0.ebuild
new file mode 100644
index 0000000000000..cfda2644e00ec
--- /dev/null
+++ b/dev-ruby/lumberjack/lumberjack-1.4.0.ebuild
@@ -0,0 +1,28 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+USE_RUBY="ruby32 ruby33 ruby34"
+
+RUBY_FAKEGEM_RECIPE_TEST="rspec3"
+RUBY_FAKEGEM_EXTRADOC="README.md"
+
+RUBY_FAKEGEM_GEMSPEC="lumberjack.gemspec"
+
+inherit ruby-fakegem
+
+DESCRIPTION="A simple, powerful, and very fast logging utility"
+HOMEPAGE="https://github.com/bdurand/lumberjack"
+SRC_URI="https://github.com/bdurand/lumberjack/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="MIT"
+SLOT="0"
+KEYWORDS="~amd64"
+IUSE="test"
+
+ruby_add_bdepend "test? ( >=dev-ruby/timecop-0.8 )"
+
+all_ruby_prepare() {
+	sed -i -e 's/git ls-files -z/find * -print0/' -e 's/__dir__/"."/' ${RUBY_FAKEGEM_GEMSPEC} || die
+}