diff --git a/package-lock.json b/package-lock.json
index a858a5d0..e84d1c57 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18,7 +18,7 @@
         "morgan": "^1.10.0",
         "ncp": "^2.0.0",
         "typescript": "^5.5",
-        "warframe-public-export-plus": "^0.5.54",
+        "warframe-public-export-plus": "^0.5.55",
         "warframe-riven-info": "^0.1.2",
         "winston": "^3.17.0",
         "winston-daily-rotate-file": "^5.0.0"
@@ -3789,9 +3789,9 @@
       }
     },
     "node_modules/warframe-public-export-plus": {
-      "version": "0.5.54",
-      "resolved": "https://registry.npmjs.org/warframe-public-export-plus/-/warframe-public-export-plus-0.5.54.tgz",
-      "integrity": "sha512-27r6qLErr3P8UVDiEzhDAs/BjdAS3vI2CQ58jSI+LClDlj6QL+y1jQe8va/npl3Ft2K8PywLkZ8Yso0j9YzvOA=="
+      "version": "0.5.55",
+      "resolved": "https://registry.npmjs.org/warframe-public-export-plus/-/warframe-public-export-plus-0.5.55.tgz",
+      "integrity": "sha512-Gnd4FCBVuxm2xWGfu8xxxqPIPSnnTqiEWlpP3rsFpVlQs09RNFnW2PEX9rCZt0f3SvHBv5ssDDrFlzgBHS1yrA=="
     },
     "node_modules/warframe-riven-info": {
       "version": "0.1.2",
diff --git a/package.json b/package.json
index 008d5a18..58b231d3 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "morgan": "^1.10.0",
     "ncp": "^2.0.0",
     "typescript": "^5.5",
-    "warframe-public-export-plus": "^0.5.54",
+    "warframe-public-export-plus": "^0.5.55",
     "warframe-riven-info": "^0.1.2",
     "winston": "^3.17.0",
     "winston-daily-rotate-file": "^5.0.0"
diff --git a/src/services/inventoryService.ts b/src/services/inventoryService.ts
index 48657e88..fe35cff6 100644
--- a/src/services/inventoryService.ts
+++ b/src/services/inventoryService.ts
@@ -408,8 +408,32 @@ export const addItem = async (
         const meta = ExportCustoms[typeName];
         let inventoryChanges: IInventoryChanges;
         if (meta.productCategory == "CrewShipWeaponSkins") {
-            inventoryChanges = addCrewShipWeaponSkin(inventory, typeName);
+            if (meta.subroutines || meta.randomisedUpgrades) {
+                // House versions need to be identified to get stats so put them into raw salvage first.
+                const rawSalvageChanges = [
+                    {
+                        ItemType: typeName,
+                        ItemCount: quantity
+                    }
+                ];
+                addCrewShipRawSalvage(inventory, rawSalvageChanges);
+                inventoryChanges = { CrewShipRawSalvage: rawSalvageChanges };
+            } else {
+                // Sigma versions can be added directly.
+                if (quantity != 1) {
+                    throw new Error(
+                        `unexpected acquisition quantity of CrewShipWeaponSkin: got ${quantity}, expected 1`
+                    );
+                }
+                inventoryChanges = {
+                    ...addCrewShipWeaponSkin(inventory, typeName),
+                    ...occupySlot(inventory, InventorySlot.RJ_COMPONENT_AND_ARMAMENTS, premiumPurchase)
+                };
+            }
         } else {
+            if (quantity != 1) {
+                throw new Error(`unexpected acquisition quantity of WeaponSkins: got ${quantity}, expected 1`);
+            }
             inventoryChanges = addSkin(inventory, typeName);
         }
         if (meta.additionalItems) {