diff --git a/app-doc/cantera-docs/Manifest b/app-doc/cantera-docs/Manifest
index be47315adfc44..349412ddf83cb 100644
--- a/app-doc/cantera-docs/Manifest
+++ b/app-doc/cantera-docs/Manifest
@@ -1,2 +1 @@
-DIST cantera-docs-2.5.1.tar.xz 4916296 BLAKE2B eb3da9f1258f6ee71d8a886c916b7c53c886078a0cf92bb407b6ddde28da659e9bb9195809a65ffdf20a49cee107e1a6503a381b52cc58a36fe750bd7edc6d72 SHA512 3e7cac6bc5ef8c8721f4fa4aa34ba9a3291a8bb9919801df22d080a4a45158e9388d2e4b19f0b133fbf9e9a1810d3ef53d12aae032caed5bfe593bc3054de939
 DIST cantera-docs-2.6.0.tar.xz 5561604 BLAKE2B 3fab71497584e7be6b025daaedb9cdf87c837a2476206882016894e9af9dc719dc99f5b428beb836df1b83c1db6c8bffad6abf480a4e71e3756985c70f4362d6 SHA512 d9273396cbc7638ed2ab9ce754fe75cd7993a00884c3c988fa007527842913696a97b796cc5dd57f5657813c339ad61ad1ffcdaf7384a667eee97d70cae441bc
diff --git a/app-doc/cantera-docs/cantera-docs-2.5.1.ebuild b/app-doc/cantera-docs/cantera-docs-2.5.1.ebuild
deleted file mode 100644
index 1b4e875f36ee4..0000000000000
--- a/app-doc/cantera-docs/cantera-docs-2.5.1.ebuild
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright 1999-2021 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=7
-
-inherit desktop xdg
-
-DESCRIPTION="Documentation API reference for Cantera package libraries"
-HOMEPAGE="https://cantera.org"
-SRC_URI="https://github.com/band-a-prend/gentoo-overlay/releases/download/ct-docs-${PV}/${P}_modified_menu.tar.xz -> ${P}.tar.xz"
-
-LICENSE="BSD"
-SLOT="0"
-KEYWORDS="~amd64 ~riscv ~x86"
-IUSE=""
-
-S="${WORKDIR}/"
-
-src_install() {
-	insinto /usr/share/cantera/doc/
-	doins -r "${S}/."
-
-	make_desktop_entry "/usr/bin/xdg-open /usr/share/cantera/doc/doxygen/html/index.html" "Cantera Doxygen Documentation" "text-html" "Development"
-	make_desktop_entry "/usr/bin/xdg-open /usr/share/cantera/doc/sphinx/html/index.html" "Cantera Sphinx Documentation" "text-html" "Development"
-}