diff --git a/dev-ruby/atomic/Manifest b/dev-ruby/atomic/Manifest
deleted file mode 100644
index 8d151b413621e..0000000000000
--- a/dev-ruby/atomic/Manifest
+++ /dev/null
@@ -1 +0,0 @@
-DIST atomic-1.1.101.gem 17920 BLAKE2B 50f4efc215293e931380b6307231279b3c5ca055aa8082fee8575963a68b3d54262449bf45fb1a514dab18f53a1dd9e0467a0f7ac67dea7a45fcce09155721dd SHA512 59c82fa5ec984b7ecd97964ea075ea327511fd4e71cc5ac72d3fb573b777c9fb289f462d022ea1e0256b38dc369c9f7fa7a61b7af877bd06ec94252237111e8d
diff --git a/dev-ruby/atomic/atomic-1.1.101-r1.ebuild b/dev-ruby/atomic/atomic-1.1.101-r1.ebuild
deleted file mode 100644
index c556a238d8614..0000000000000
--- a/dev-ruby/atomic/atomic-1.1.101-r1.ebuild
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 1999-2023 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-USE_RUBY="ruby27 ruby30 ruby31 ruby32"
-
-RUBY_FAKEGEM_TASK_DOC=""
-
-RUBY_FAKEGEM_EXTENSIONS=(ext/extconf.rb)
-
-inherit multilib ruby-fakegem
-
-DESCRIPTION="An atomic reference implementation for JRuby, Rubinius, and MRI"
-HOMEPAGE="https://github.com/headius/ruby-atomic"
-
-LICENSE="Apache-2.0"
-SLOT="0"
-KEYWORDS="amd64 arm ~arm64 ~hppa ppc ppc64 ~riscv ~s390 ~sparc x86"
-IUSE=""
-
-all_ruby_prepare() {
-	# Avoid compilation dependencies since we compile directly.
-	sed -i -e '/:test => :compile/ s:^:#:' \
-		-e '/extensiontask/,/end/ s:^:#:' Rakefile || die
-}
diff --git a/dev-ruby/atomic/atomic-1.1.101-r2.ebuild b/dev-ruby/atomic/atomic-1.1.101-r2.ebuild
deleted file mode 100644
index 7f348355158f0..0000000000000
--- a/dev-ruby/atomic/atomic-1.1.101-r2.ebuild
+++ /dev/null
@@ -1,26 +0,0 @@
-# Copyright 1999-2023 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=8
-
-USE_RUBY="ruby31 ruby32 ruby33"
-
-RUBY_FAKEGEM_TASK_DOC=""
-
-RUBY_FAKEGEM_EXTENSIONS=(ext/extconf.rb)
-
-inherit ruby-fakegem
-
-DESCRIPTION="An atomic reference implementation for JRuby, Rubinius, and MRI"
-HOMEPAGE="https://github.com/headius/ruby-atomic"
-
-LICENSE="Apache-2.0"
-SLOT="0"
-KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
-IUSE=""
-
-all_ruby_prepare() {
-	# Avoid compilation dependencies since we compile directly.
-	sed -i -e '/:test => :compile/ s:^:#:' \
-		-e '/extensiontask/,/end/ s:^:#:' Rakefile || die
-}
diff --git a/dev-ruby/atomic/metadata.xml b/dev-ruby/atomic/metadata.xml
deleted file mode 100644
index 8935ba8951415..0000000000000
--- a/dev-ruby/atomic/metadata.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
-<pkgmetadata>
-  <maintainer type="project">
-    <email>ruby@gentoo.org</email>
-    <name>Gentoo Ruby Project</name>
-  </maintainer>
-  <upstream>
-    <remote-id type="github">headius/ruby-atomic</remote-id>
-  </upstream>
-</pkgmetadata>
diff --git a/profiles/package.mask b/profiles/package.mask
index 3654f7ca4547a..134a3094f1509 100644
--- a/profiles/package.mask
+++ b/profiles/package.mask
@@ -286,13 +286,6 @@ dev-php/mockery
 # Removal on 2024-04-22.
 dev-php/libchart
 
-# Hans de Graaff <graaff@gentoo.org> (2024-03-22)
-# Broken with modern compilers, bug 884249. No longer maintained
-# upstream, last release 5 years ago. No reverse dependencies left. Use
-# dev-ruby/concurrent-ruby instead.
-# Removal on 2024-04-22.
-dev-ruby/atomic
-
 # Rahil Bhimjiani <me@rahil.rocks> (2024-03-17)
 # buildah-1.34.0 isn't getting security fixes from upstream
 # https://github.com/containers/buildah/issues/5320