diff --git a/dev-ruby/ruby-shadow/ruby-shadow-2.5.1.ebuild b/dev-ruby/ruby-shadow/ruby-shadow-2.5.1.ebuild
index 2e42f05bcf5a8..7fbf2f53f563f 100644
--- a/dev-ruby/ruby-shadow/ruby-shadow-2.5.1.ebuild
+++ b/dev-ruby/ruby-shadow/ruby-shadow-2.5.1.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_TASK_TEST=""
 
@@ -19,7 +19,6 @@ HOMEPAGE="https://github.com/apalmblad/ruby-shadow"
 LICENSE="|| ( public-domain Unlicense )"
 SLOT="0"
 KEYWORDS="amd64 ~arm ~arm64 ~hppa ppc ~ppc64 ~riscv ~sparc x86"
-IUSE=""
 
 PATCHES=(
 	"${FILESDIR}/${P}-ruby32.patch"
diff --git a/dev-ruby/ruby-shout/ruby-shout-2.2.2-r2.ebuild b/dev-ruby/ruby-shout/ruby-shout-2.2.2-r2.ebuild
index 59543decf60d9..91345e47fa665 100644
--- a/dev-ruby/ruby-shout/ruby-shout-2.2.2-r2.ebuild
+++ b/dev-ruby/ruby-shout/ruby-shout-2.2.2-r2.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_TASK_TEST=""
 
@@ -19,9 +19,8 @@ HOMEPAGE="https://github.com/niko/ruby-shout"
 LICENSE="BSD"
 SLOT="0"
 KEYWORDS="~amd64 ~ppc x86"
-IUSE=""
 
-RDEPEND+=" >=media-libs/libshout-2.0"
-DEPEND+=" >=media-libs/libshout-2.0"
+RDEPEND=">=media-libs/libshout-2.0"
+DEPEND=">=media-libs/libshout-2.0"
 
 PATCHES=( "${FILESDIR}/${P}-errno.patch" )
diff --git a/dev-ruby/ruby-termios/ruby-termios-1.1.0-r2.ebuild b/dev-ruby/ruby-termios/ruby-termios-1.1.0-r2.ebuild
index 9b7fc27f48648..7f8fb7785c736 100644
--- a/dev-ruby/ruby-termios/ruby-termios-1.1.0-r2.ebuild
+++ b/dev-ruby/ruby-termios/ruby-termios-1.1.0-r2.ebuild
@@ -1,8 +1,8 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_EXTRADOC="README.md termios.rd"
 
@@ -21,4 +21,3 @@ HOMEPAGE="http://arika.org/ruby/termios"
 LICENSE="Ruby-BSD"
 SLOT="0"
 KEYWORDS="amd64 ~hppa ~mips ~ppc x86"
-IUSE=""
diff --git a/dev-ruby/ruby-yadis/ruby-yadis-0.3.4-r3.ebuild b/dev-ruby/ruby-yadis/ruby-yadis-0.3.4-r3.ebuild
index d1427b629b384..d297a08743d85 100644
--- a/dev-ruby/ruby-yadis/ruby-yadis-0.3.4-r3.ebuild
+++ b/dev-ruby/ruby-yadis/ruby-yadis-0.3.4-r3.ebuild
@@ -1,8 +1,8 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_TASK_DOC=""
 RUBY_FAKEGEM_TASK_TEST=""
diff --git a/dev-ruby/rubyzip/rubyzip-2.3.2-r1.ebuild b/dev-ruby/rubyzip/rubyzip-2.3.2-r1.ebuild
index 54f13b3b2f7f3..c4e4f1e13118f 100644
--- a/dev-ruby/rubyzip/rubyzip-2.3.2-r1.ebuild
+++ b/dev-ruby/rubyzip/rubyzip-2.3.2-r1.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_RECIPE_DOC="none"
 RUBY_FAKEGEM_EXTRADOC="Changelog.md README.md TODO"
@@ -22,10 +22,9 @@ SRC_URI="https://github.com/rubyzip/rubyzip/archive/v${PV}.tar.gz -> ${P}-git.tg
 LICENSE="Ruby-BSD"
 SLOT="$(ver_cut 1)"
 KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
-IUSE=""
+IUSE="test"
 
-RDEPEND=""
-DEPEND="${DEPEND} test? ( app-arch/zip )"
+DEPEND="test? ( app-arch/zip )"
 
 ruby_add_bdepend "test? ( dev-ruby/minitest:5 )"
 
diff --git a/dev-ruby/sdoc/sdoc-1.1.0-r1.ebuild b/dev-ruby/sdoc/sdoc-1.1.0-r1.ebuild
index c30c7dc8d7ab4..12a553e08388d 100644
--- a/dev-ruby/sdoc/sdoc-1.1.0-r1.ebuild
+++ b/dev-ruby/sdoc/sdoc-1.1.0-r1.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 inherit ruby-fakegem
 
diff --git a/dev-ruby/securerandom/securerandom-0.4.1.ebuild b/dev-ruby/securerandom/securerandom-0.4.1.ebuild
index 18c7777cc88cc..4ceb6c9e0da8c 100644
--- a/dev-ruby/securerandom/securerandom-0.4.1.ebuild
+++ b/dev-ruby/securerandom/securerandom-0.4.1.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_BINWRAP=""
 RUBY_FAKEGEM_EXTRADOC="README.md"
diff --git a/dev-ruby/set/set-1.1.1.ebuild b/dev-ruby/set/set-1.1.1.ebuild
index 380232b03cf3b..349eedb5e4215 100644
--- a/dev-ruby/set/set-1.1.1.ebuild
+++ b/dev-ruby/set/set-1.1.1.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_BINWRAP=""
 RUBY_FAKEGEM_GEMSPEC="set.gemspec"
diff --git a/dev-ruby/simple-rss/simple-rss-1.3.3-r1.ebuild b/dev-ruby/simple-rss/simple-rss-1.3.3-r1.ebuild
index 3b80840365a2a..fa60595be8089 100644
--- a/dev-ruby/simple-rss/simple-rss-1.3.3-r1.ebuild
+++ b/dev-ruby/simple-rss/simple-rss-1.3.3-r1.ebuild
@@ -1,9 +1,9 @@
-# Copyright 1999-2023 Gentoo Authors
+# Copyright 1999-2024 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
 
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_TASK_DOC="doc"
 RUBY_FAKEGEM_EXTRADOC="README.markdown"
@@ -14,9 +14,8 @@ DESCRIPTION="A simple, flexible, extensible, and liberal RSS and Atom reader for
 HOMEPAGE="https://github.com/cardmagic/simple-rss"
 LICENSE="LGPL-2"
 
-KEYWORDS="amd64 x86"
 SLOT="0"
-IUSE=""
+KEYWORDS="amd64 x86"
 
 all_ruby_prepare() {
 	# Avoid dependency on bundler
diff --git a/dev-ruby/simplecov-html/simplecov-html-0.13.1.ebuild b/dev-ruby/simplecov-html/simplecov-html-0.13.1.ebuild
index 53101e0fde4d9..261971c1f72ba 100644
--- a/dev-ruby/simplecov-html/simplecov-html-0.13.1.ebuild
+++ b/dev-ruby/simplecov-html/simplecov-html-0.13.1.ebuild
@@ -2,7 +2,7 @@
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
-USE_RUBY="ruby31 ruby32 ruby33"
+USE_RUBY="ruby31 ruby32 ruby33 ruby34"
 
 RUBY_FAKEGEM_EXTRADOC="README.md"