diff --git a/_maps/map_files/NewArgos/new_argos.dmm b/WorkInProgress/NewArgos/new_argos.dmm
similarity index 100%
rename from _maps/map_files/NewArgos/new_argos.dmm
rename to WorkInProgress/NewArgos/new_argos.dmm
diff --git a/_maps/map_files/Theseus/Theseus.dmm b/_maps/map_files/Theseus/Theseus.dmm
index c13d5cf55b9b..1c1430b9b20b 100644
--- a/_maps/map_files/Theseus/Theseus.dmm
+++ b/_maps/map_files/Theseus/Theseus.dmm
@@ -4858,7 +4858,6 @@
 	dir = 4
 	},
 /obj/machinery/newscaster/directional/south,
-/obj/effect/landmark/start/depsec/engineering,
 /obj/item/radio/intercom/directional/west,
 /obj/effect/turf_decal/tile/red/anticorner/contrasted{
 	dir = 8
@@ -11835,7 +11834,6 @@
 /obj/machinery/power/apc/auto_name/directional/east,
 /obj/machinery/atmospherics/components/unary/vent_pump/on/layer4,
 /obj/machinery/atmospherics/pipe/smart/manifold4w/scrubbers/hidden/layer2,
-/obj/effect/landmark/start/depsec/supply,
 /obj/structure/cable/yellow{
 	icon_state = "8"
 	},
@@ -17501,7 +17499,6 @@
 "gxl" = (
 /obj/machinery/atmospherics/pipe/smart/manifold4w/supply/hidden/layer4,
 /obj/machinery/atmospherics/pipe/smart/manifold4w/scrubbers/hidden/layer2,
-/obj/effect/landmark/start/depsec/engineering,
 /obj/effect/turf_decal/tile/red/half/contrasted{
 	dir = 8
 	},
@@ -33329,7 +33326,6 @@
 /area/station/commons/vacant_room/office)
 "mzd" = (
 /obj/machinery/atmospherics/pipe/smart/manifold4w/scrubbers/hidden/layer2,
-/obj/effect/landmark/start/depsec/supply,
 /obj/structure/cable/yellow{
 	icon_state = "12"
 	},
@@ -34658,7 +34654,6 @@
 /obj/structure/reagent_dispensers/wall/peppertank/directional/east,
 /obj/machinery/atmospherics/pipe/smart/manifold4w/supply/hidden/layer4,
 /obj/machinery/atmospherics/pipe/smart/manifold4w/scrubbers/hidden/layer2,
-/obj/effect/landmark/start/depsec/supply,
 /turf/open/floor/iron,
 /area/station/security/checkpoint/supply)
 "mUP" = (
@@ -36746,7 +36741,6 @@
 /obj/structure/chair{
 	dir = 4
 	},
-/obj/effect/landmark/start/depsec/engineering,
 /obj/effect/turf_decal/tile/red/half/contrasted{
 	dir = 8
 	},
@@ -38885,7 +38879,6 @@
 	department = "Security";
 	departmentType = 3
 	},
-/obj/effect/landmark/start/depsec/supply,
 /turf/open/floor/iron,
 /area/station/security/checkpoint/supply)
 "owe" = (
@@ -41939,7 +41932,6 @@
 /area/station/maintenance/starboard/greater)
 "pCM" = (
 /obj/machinery/atmospherics/pipe/smart/manifold4w/scrubbers/hidden/layer2,
-/obj/effect/landmark/start/depsec/engineering,
 /obj/structure/cable/yellow{
 	icon_state = "3"
 	},
@@ -43145,7 +43137,6 @@
 /obj/structure/chair/office{
 	dir = 1
 	},
-/obj/effect/landmark/start/depsec/engineering,
 /obj/machinery/atmospherics/components/unary/vent_pump/on/layer4{
 	dir = 8
 	},
@@ -51222,7 +51213,6 @@
 /obj/machinery/atmospherics/components/unary/vent_scrubber/on/layer2{
 	dir = 4
 	},
-/obj/effect/landmark/start/depsec/supply,
 /obj/structure/cable/yellow{
 	icon_state = "12"
 	},
@@ -57351,7 +57341,6 @@
 	dir = 1
 	},
 /obj/machinery/power/apc/auto_name/directional/south,
-/obj/effect/landmark/start/depsec/engineering,
 /obj/effect/turf_decal/tile/red/half/contrasted,
 /obj/structure/cable/yellow{
 	icon_state = "1"
diff --git a/_maps/map_files/Theseus/medbay_holder.dmm b/_maps/map_files/Theseus/medbay_holder.dmm
index 5db3486766b8..c6f5a8fb3fe0 100644
--- a/_maps/map_files/Theseus/medbay_holder.dmm
+++ b/_maps/map_files/Theseus/medbay_holder.dmm
@@ -2200,7 +2200,6 @@
 /turf/open/floor/iron/dark,
 /area/station/security/checkpoint/medical)
 "hn" = (
-/obj/effect/landmark/start/depsec/medical,
 /obj/machinery/button/door/directional/east{
 	id = "medsecprivacy";
 	name = "Privacy Shutters Control"
@@ -2632,7 +2631,6 @@
 /obj/effect/turf_decal/trimline/red/filled/line{
 	dir = 4
 	},
-/obj/effect/landmark/start/depsec/medical,
 /turf/open/floor/iron/dark,
 /area/station/security/checkpoint/medical)
 "jc" = (
@@ -2826,7 +2824,6 @@
 /obj/effect/turf_decal/trimline/red/filled/line{
 	dir = 10
 	},
-/obj/effect/landmark/start/depsec/medical,
 /turf/open/floor/iron/dark,
 /area/station/security/checkpoint/medical)
 "jL" = (
@@ -11493,7 +11490,6 @@
 /obj/effect/turf_decal/trimline/red/filled/line{
 	dir = 4
 	},
-/obj/effect/landmark/start/depsec/medical,
 /obj/structure/cable/smart_cable/color/yellow,
 /turf/open/floor/iron/dark,
 /area/station/security/checkpoint/medical)
@@ -13369,7 +13365,6 @@
 /obj/effect/turf_decal/trimline/red/filled/line{
 	dir = 10
 	},
-/obj/effect/landmark/start/depsec/medical,
 /obj/structure/cable/smart_cable/color/yellow,
 /obj/machinery/atmospherics/pipe/smart/manifold4w/supply/hidden/layer4,
 /obj/machinery/atmospherics/pipe/smart/manifold4w/scrubbers/hidden/layer2,
diff --git a/tools/UpdatePaths/remove_depsec.txt b/tools/UpdatePaths/remove_depsec.txt
new file mode 100644
index 000000000000..0ef492704b25
--- /dev/null
+++ b/tools/UpdatePaths/remove_depsec.txt
@@ -0,0 +1,2 @@
+/obj/effect/landmark/start/depsec/@SUBTYPES : @DELETE
+/obj/effect/landmark/start/depsec : @DELETE