diff --git a/.tgs.yml b/.tgs.yml
index 8aedea02b4e..69d66021cee 100644
--- a/.tgs.yml
+++ b/.tgs.yml
@@ -3,7 +3,7 @@
 version: 1
 # The BYOND version to use (kept in sync with dependencies.sh by the "TGS Test Suite" CI job)
 # Must be interpreted as a string, keep quoted
-byond: "515.1647"
+byond: "516.1648"
 # Folders to create in "<instance_path>/Configuration/GameStaticFiles/"
 static_files:
   # Config directory should be static
diff --git a/code/__DEFINES/wounds.dm b/code/__DEFINES/wounds.dm
index eb59c337e7a..25c32871b43 100644
--- a/code/__DEFINES/wounds.dm
+++ b/code/__DEFINES/wounds.dm
@@ -49,7 +49,7 @@
 
 // ~wound global lists
 // list in order of highest severity to lowest
-GLOBAL_LIST_INIT(global_wound_types, list(WOUND_BLUNT = list(/datum/wound/blunt/critical, /datum/wound/blunt/severe, /datum/wound/blunt/moderate),
+GLOBAL_LIST_INIT(global_wound_types, alist(WOUND_BLUNT = list(/datum/wound/blunt/critical, /datum/wound/blunt/severe, /datum/wound/blunt/moderate),
 		WOUND_SLASH = list(/datum/wound/slash/critical, /datum/wound/slash/critical, /datum/wound/slash/moderate),
 		WOUND_PIERCE = list(/datum/wound/pierce/critical, /datum/wound/pierce/severe, /datum/wound/pierce/moderate),
 		WOUND_BURN = list(/datum/wound/burn/critical, /datum/wound/burn/severe, /datum/wound/burn/moderate),
diff --git a/code/datums/hud.dm b/code/datums/hud.dm
index 4703a31ea0f..da7d364e92c 100644
--- a/code/datums/hud.dm
+++ b/code/datums/hud.dm
@@ -3,7 +3,7 @@
 GLOBAL_LIST_EMPTY(all_huds)
 
 //GLOBAL HUD LIST
-GLOBAL_LIST_INIT(huds, list(
+GLOBAL_LIST_INIT(huds, alist(
 	DATA_HUD_SECURITY_BASIC = new/datum/atom_hud/data/human/security/basic(),
 	DATA_HUD_SECURITY_ADVANCED = new/datum/atom_hud/data/human/security/advanced(),
 	DATA_HUD_MEDICAL_BASIC = new/datum/atom_hud/data/human/medical/basic(),
diff --git a/code/game/mecha/mecha.dm b/code/game/mecha/mecha.dm
index a70882bcbb0..c2c7fc534af 100644
--- a/code/game/mecha/mecha.dm
+++ b/code/game/mecha/mecha.dm
@@ -26,7 +26,7 @@
 	max_integrity = 300 //max_integrity is base health
 	var/deflect_chance = 10 //chance to deflect the incoming projectiles, hits, or lesser the effect of ex_act.
 	armor = list("melee" = 20, "bullet" = 10, "laser" = 0, "energy" = 0, "bomb" = 0, "bio" = 0, "rad" = 0, "fire" = 100, "acid" = 100)
-	var/list/facing_modifiers = list(MECHA_FRONT_ARMOUR = 1.5, MECHA_SIDE_ARMOUR = 1, MECHA_BACK_ARMOUR = 0.5)
+	var/list/facing_modifiers = alist(MECHA_FRONT_ARMOUR = 1.5, MECHA_SIDE_ARMOUR = 1, MECHA_BACK_ARMOUR = 0.5)
 	var/equipment_disabled = 0 //disabled due to EMP
 	var/obj/item/stock_parts/cell/cell ///Keeps track of the mech's cell
 	var/obj/item/stock_parts/scanning_module/scanmod ///Keeps track of the mech's scanning module
diff --git a/code/modules/mob/living/simple_animal/hostile/mining_mobs/hivelord_outfits.dm b/code/modules/mob/living/simple_animal/hostile/mining_mobs/hivelord_outfits.dm
index bac09fde17a..8c28726cccd 100644
--- a/code/modules/mob/living/simple_animal/hostile/mining_mobs/hivelord_outfits.dm
+++ b/code/modules/mob/living/simple_animal/hostile/mining_mobs/hivelord_outfits.dm
@@ -230,7 +230,7 @@
 				)
 		if(prob(30))
 			backpack_contents += list(
-				/obj/item/reagent_containers/hypospray/medipen/survival = pick_weight(list(
+				/obj/item/reagent_containers/hypospray/medipen/survival = pick_weight(alist(
 					1 = 3,
 					2 = 2,
 					3 = 1
diff --git a/dependencies.sh b/dependencies.sh
index 8ca371c8676..385a55e6bfe 100755
--- a/dependencies.sh
+++ b/dependencies.sh
@@ -4,8 +4,8 @@
 #Final authority on what's required to fully build the project
 
 # byond version
-export BYOND_MAJOR=515
-export BYOND_MINOR=1647
+export BYOND_MAJOR=516
+export BYOND_MINOR=1648
 
 #rust version
 export RUST_VERSION=1.81.0