diff --git a/changelog.md b/changelog.md
index edeedc6..10a78e5 100644
--- a/changelog.md
+++ b/changelog.md
@@ -5,6 +5,7 @@
 - The prestige/sec display now shows decimals.
 - resetsNothing now works immediately on a reset that enables it.
 - Added onComplete for milestones.
+- Added addBuyables.
 
 - Fixed challenges with no currencyDisplayName using "points" instead of the mod's pointsName.
 - inChallenge no longer can return undefined.
diff --git a/docs/buyables.md b/docs/buyables.md
index 12854eb..f75d37e 100644
--- a/docs/buyables.md
+++ b/docs/buyables.md
@@ -7,6 +7,7 @@ The amount of a buyable owned is a `Decimal`.
 Useful functions for dealing with buyables and implementing their effects:
 
 - getBuyableAmount(layer, id): get the amount of the buyable the player has
+- addBuyables(layer, id, amount): add to the amount of the buyable
 - setBuyableAmount(layer, id, amount): set the amount of the buyable the player has
 - buyableEffect(layer, id): Returns the current effects of the buyable, if any.
 
diff --git a/js/utils/easyAccess.js b/js/utils/easyAccess.js
index 7f5370d..b6c4afc 100644
--- a/js/utils/easyAccess.js
+++ b/js/utils/easyAccess.js
@@ -30,6 +30,10 @@ function setBuyableAmount(layer, id, amt) {
 	player[layer].buyables[id] = amt
 }
 
+function addBuyables(layer, id, amt) {
+	player[layer].buyables[id] = player[layer].buyables[id].add(amt)
+}
+
 function getClickableState(layer, id) {
 	return (player[layer].clickables[id])
 }