diff --git a/lua/rose-pine.lua b/lua/rose-pine.lua
index d45d4af..aae44bc 100644
--- a/lua/rose-pine.lua
+++ b/lua/rose-pine.lua
@@ -611,6 +611,16 @@ local function set_highlights()
 	end
 
 	for group, options in pairs(config.options.highlight_groups) do
+		local default_opts = highlights[group] or {}
+
+		if (options.inherit == nil or options.inherit) and default_opts ~= nil then -- On merge.
+			options.inherit = nil -- Don't add this key to the highlight_group after merge.
+			highlights[group] = vim.tbl_extend("force", default_opts, options)
+		else -- On overwrite.
+			options.inherit = nil -- Don't add this key to the highlight_group.
+			highlights[group] = options
+		end
+
 		highlights[group] = vim.tbl_extend("force", highlights[group] or {}, options)
 	end