diff --git a/styles/proton/catppuccin.user.css b/styles/proton/catppuccin.user.css
index 3ce858e..aec596f 100644
--- a/styles/proton/catppuccin.user.css
+++ b/styles/proton/catppuccin.user.css
@@ -2,7 +2,7 @@
 @name           Proton Catppuccin
 @namespace      github.com/catppuccin/userstyles/styles/proton
 @homepageURL    https://github.com/catppuccin/userstyles/tree/main/styles/proton
-@version        0.1.3
+@version        0.1.4
 @description    Soothing pastel theme for Proton services
 @author         Catppuccin
 @updateURL      https://github.com/catppuccin/userstyles/raw/main/styles/proton/catppuccin.user.css
@@ -299,6 +299,8 @@
       --optional-link-norm: var(--interaction-norm-major-1);
       --optional-link-hover: var(--interaction-norm-major-2);
       --optional-link-active: var(--interaction-norm-major-3);
+      --optional-background-elevated: @surface0;
+      --optional-background-lowered: var(--background-norm);
       --optional-email-item-unread-background-color: var(--background-weak);
       --optional-email-item-read-background-color: var(--background-norm);
       --optional-email-item-read-text-color: var(--text-weak);