diff --git a/README.md b/README.md
index 87567de..1b9a6c9 100644
--- a/README.md
+++ b/README.md
@@ -26,6 +26,7 @@ These themes have been tested and work out of the box without any configuration.
 - Macwaita
 - Matcha (Manjaro default)
 - Materia
+- Mc-OS CTLina
 - Mojave
 - Nextwaita
 - Orchis
@@ -49,6 +50,7 @@ These themes have been tested and work out of the box without any configuration.
 - Layan
 - Matcha (Manjaro default)
 - Materia
+- Mc-OS CTLina
 - Mojave
 - Orchis
 - Plata (Solus default)
diff --git a/src/modules/GtkVariants.js b/src/modules/GtkVariants.js
index de81881..bae7095 100644
--- a/src/modules/GtkVariants.js
+++ b/src/modules/GtkVariants.js
@@ -71,6 +71,10 @@ var GtkVariants = class {
             const basename = name.split('-')[0];
             variants.set('day', name.replace('-dark', ''));
             variants.set('night', variants.get('day').replace(new RegExp(`${basename}(-light)?`), `${basename}-dark`));
+        } else if (name.match(/^Mc-?OS-CTLina-Gnome/)) {
+            const version = name.split('-').pop();
+            variants.set('day', `McOS-CTLina-Gnome-${version}`);
+            variants.set('night', `Mc-OS-CTLina-Gnome-Dark-${version}`);
         } else if (name.includes('Mojave')) {
             variants.set('day', name.replace('-dark', '-light'));
             variants.set('night', variants.get('day').replace('-light', '-dark'));
diff --git a/src/modules/ShellVariants.js b/src/modules/ShellVariants.js
index 3f0794a..3407c69 100644
--- a/src/modules/ShellVariants.js
+++ b/src/modules/ShellVariants.js
@@ -68,6 +68,10 @@ var ShellVariants = class {
             const basename = name.split('-')[0];
             variants.set('day', name.replace('-dark', ''));
             variants.set('night', variants.get('day').replace(new RegExp(`${basename}(-light)?`), `${basename}-dark`));
+        } else if (name.match(/^Mc-?OS-CTLina-Gnome/)) {
+            const version = name.split('-').pop();
+            variants.set('day', `McOS-CTLina-Gnome-${version}`);
+            variants.set('night', `Mc-OS-CTLina-Gnome-Dark-${version}`);
         } else if (name.includes('Mojave')) {
             variants.set('day', name.replace('-dark', '-light'));
             variants.set('night', variants.get('day').replace('-light', '-dark'));
diff --git a/tests/gtk_themes/Mc-Os-CTLina.js b/tests/gtk_themes/Mc-Os-CTLina.js
new file mode 100644
index 0000000..25279ee
--- /dev/null
+++ b/tests/gtk_themes/Mc-Os-CTLina.js
@@ -0,0 +1,32 @@
+/*
+Night Theme Switcher Gnome Shell extension
+
+Copyright (C) 2020 Romain Vigier
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http s ://www.gnu.org/licenses/>.
+*/
+
+const test = require('ava');
+const { Variants } = require('./_variants');
+
+test('McOS-CTLina-Gnome-1.3.2', t => {
+    const variants = Variants.guessFrom('McOS-CTLina-Gnome-1.3.2');
+    t.is(variants.get('day'), 'McOS-CTLina-Gnome-1.3.2');
+    t.is(variants.get('night'), 'Mc-OS-CTLina-Gnome-Dark-1.3.2');
+});
+
+test('Mc-OS-CTLina-Gnome-Dark-1.3.2', t => {
+    const variants = Variants.guessFrom('Mc-OS-CTLina-Gnome-Dark-1.3.2');
+    t.is(variants.get('day'), 'McOS-CTLina-Gnome-1.3.2');
+    t.is(variants.get('night'), 'Mc-OS-CTLina-Gnome-Dark-1.3.2');
+});
diff --git a/tests/shell_themes/Mc-Os-CTLina.js b/tests/shell_themes/Mc-Os-CTLina.js
new file mode 100644
index 0000000..25279ee
--- /dev/null
+++ b/tests/shell_themes/Mc-Os-CTLina.js
@@ -0,0 +1,32 @@
+/*
+Night Theme Switcher Gnome Shell extension
+
+Copyright (C) 2020 Romain Vigier
+
+This program is free software: you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free Software
+Foundation, either version 3 of the License, or (at your option) any later
+version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along with
+this program. If not, see <http s ://www.gnu.org/licenses/>.
+*/
+
+const test = require('ava');
+const { Variants } = require('./_variants');
+
+test('McOS-CTLina-Gnome-1.3.2', t => {
+    const variants = Variants.guessFrom('McOS-CTLina-Gnome-1.3.2');
+    t.is(variants.get('day'), 'McOS-CTLina-Gnome-1.3.2');
+    t.is(variants.get('night'), 'Mc-OS-CTLina-Gnome-Dark-1.3.2');
+});
+
+test('Mc-OS-CTLina-Gnome-Dark-1.3.2', t => {
+    const variants = Variants.guessFrom('Mc-OS-CTLina-Gnome-Dark-1.3.2');
+    t.is(variants.get('day'), 'McOS-CTLina-Gnome-1.3.2');
+    t.is(variants.get('night'), 'Mc-OS-CTLina-Gnome-Dark-1.3.2');
+});