The supermarket giant announced it will remove all single-use plastic from own-brand tea bags.
Instead, the products will be made with biodegradable materials following successful trials.
It is also removing the outer plastic packaging of its own-brand tea products.
Plastics and Packaging Director at Aldi UK Richard Gorman said: “By the end of this year, all of our own-brand tea bags will be biodegradable and contain no plastic whatsoever.
“The changes we’ve made to our tea range will help us reduce our environmental impact and offer our customers even more environmentally-sustainable options when they shop at Aldi.”
Similar changes to more items are likely in the coming months.