diff --git a/luarules/configs/scav_spawn_defs.lua b/luarules/configs/scav_spawn_defs.lua
index a63602ea74e..b84c098cd16 100644
--- a/luarules/configs/scav_spawn_defs.lua
+++ b/luarules/configs/scav_spawn_defs.lua
@@ -35,7 +35,7 @@ local difficultyParameters = {
 		minScavs		  		= 5 * economyScale,
 		maxScavs		  		= 25 * economyScale,
 		scavPerPlayerMultiplier = 0.25,
-		bossName         		= 'armscavengerbossv2_veryeasy_scav',
+		bossName         		= 'scavengerbossv4_veryeasy_scav',
 		bossResistanceMult   	= 1 * economyScale,
 	},
 
@@ -54,7 +54,7 @@ local difficultyParameters = {
 		minScavs		  		= 10 * economyScale,
 		maxScavs		  		= 30 * economyScale,
 		scavPerPlayerMultiplier = 0.25,
-		bossName         		= 'armscavengerbossv2_easy_scav',
+		bossName         		= 'scavengerbossv4_easy_scav',
 		bossResistanceMult   	= 1.5 * economyScale,
 	},
 	[difficulties.normal] = {
@@ -72,7 +72,7 @@ local difficultyParameters = {
 		minScavs		  		= 15 * economyScale,
 		maxScavs		  		= 35 * economyScale,
 		scavPerPlayerMultiplier = 0.25,
-		bossName         		= 'armscavengerbossv2_normal_scav',
+		bossName         		= 'scavengerbossv4_normal_scav',
 		bossResistanceMult  	= 2 * economyScale,
 	},
 	[difficulties.hard] = {
@@ -90,7 +90,7 @@ local difficultyParameters = {
 		minScavs		  		= 20 * economyScale,
 		maxScavs		  		= 40 * economyScale,
 		scavPerPlayerMultiplier = 0.25,
-		bossName         		= 'armscavengerbossv2_hard_scav',
+		bossName         		= 'scavengerbossv4_hard_scav',
 		bossResistanceMult   	= 2.5 * economyScale,
 	},
 	[difficulties.veryhard] = {
@@ -108,7 +108,7 @@ local difficultyParameters = {
 		minScavs		  		= 25 * economyScale,
 		maxScavs		  		= 45 * economyScale,
 		scavPerPlayerMultiplier = 0.25,
-		bossName         		= 'armscavengerbossv2_veryhard_scav',
+		bossName         		= 'scavengerbossv4_veryhard_scav',
 		bossResistanceMult   	= 3 * economyScale,
 	},
 	[difficulties.epic] = {
@@ -126,7 +126,7 @@ local difficultyParameters = {
 		minScavs		  		= 30 * economyScale,
 		maxScavs		  		= 50 * economyScale,
 		scavPerPlayerMultiplier = 0.25,
-		bossName         		= 'armscavengerbossv2_epic_scav',
+		bossName         		= 'scavengerbossv4_epic_scav',
 		bossResistanceMult   	= 3.5 * economyScale,
 	},
 
@@ -1223,12 +1223,12 @@ scavBehaviours = {
 		[UnitDefNames["legcomlvl8_scav"].id] = { distance = 5000, chance = 0.01 },
 		[UnitDefNames["legcomlvl9_scav"].id] = { distance = 5000, chance = 0.01 },
 		[UnitDefNames["legcomlvl10_scav"].id] = { distance = 5000, chance = 0.01 },
-		[UnitDefNames["armscavengerbossv2_veryeasy_scav"].id]	= { distance = 2000, chance = 0.001},
-		[UnitDefNames["armscavengerbossv2_easy_scav"].id] 		= { distance = 2000, chance = 0.001},
-		[UnitDefNames["armscavengerbossv2_normal_scav"].id] 	= { distance = 2000, chance = 0.001},
-		[UnitDefNames["armscavengerbossv2_hard_scav"].id] 		= { distance = 2000, chance = 0.001},
-		[UnitDefNames["armscavengerbossv2_veryhard_scav"].id] 	= { distance = 2000, chance = 0.001},
-		[UnitDefNames["armscavengerbossv2_epic_scav"].id]		= { distance = 2000, chance = 0.001},
+		[UnitDefNames["scavengerbossv4_veryeasy_scav"].id]	= { distance = 50000, chance = 0.003},
+		[UnitDefNames["scavengerbossv4_easy_scav"].id] 		= { distance = 50000, chance = 0.003},
+		[UnitDefNames["scavengerbossv4_normal_scav"].id] 	= { distance = 50000, chance = 0.003},
+		[UnitDefNames["scavengerbossv4_hard_scav"].id] 		= { distance = 50000, chance = 0.003},
+		[UnitDefNames["scavengerbossv4_veryhard_scav"].id] 	= { distance = 50000, chance = 0.003},
+		[UnitDefNames["scavengerbossv4_epic_scav"].id]		= { distance = 50000, chance = 0.003},
 		[UnitDefNames["scavmist_scav"].id]			= { distance = 2000, chance = 1},
 		[UnitDefNames["scavmistxl_scav"].id]		= { distance = 2000, chance = 1},
 		[UnitDefNames["scavmistxxl_scav"].id]		= { distance = 2000, chance = 1},