diff --git a/src/reference/openapi.yml b/src/reference/openapi.yml
index bc88cae91..91c079801 100644
--- a/src/reference/openapi.yml
+++ b/src/reference/openapi.yml
@@ -13462,6 +13462,8 @@ paths:
             application/json:
               schema:
                 type: object
+                required:
+                  - items
                 properties:
                   items:
                     type: array
@@ -13471,6 +13473,13 @@ paths:
                       x-stoplight:
                         id: srl106ylr6cpm
                       type: object
+                      required:
+                        - cost_id
+                        - type
+                        - supplier
+                        - description
+                        - attachments
+                        - cost
                       properties:
                         cost_id:
                           type: number
@@ -13480,6 +13489,9 @@ paths:
                           type: object
                           x-stoplight:
                             id: itchthltx575n
+                          required:
+                            - name
+                            - id
                           properties:
                             name:
                               type: string
@@ -13493,6 +13505,9 @@ paths:
                           type: object
                           x-stoplight:
                             id: pewi2gjqq2j1h
+                          required:
+                            - name
+                            - id
                           properties:
                             name:
                               type: string
@@ -13514,6 +13529,10 @@ paths:
                             x-stoplight:
                               id: w31uej26rl532
                             type: object
+                            required:
+                              - id
+                              - url
+                              - mimetype
                             properties:
                               id:
                                 type: number
@@ -13527,6 +13546,10 @@ paths:
                                 type: string
                                 x-stoplight:
                                   id: 6tqj2cg96280v
+                        cost:
+                          type: number
+                          x-stoplight:
+                            id: 4zut3xli3ht5f
               examples:
                 Example 1:
                   value:
@@ -13543,6 +13566,7 @@ paths:
                             url: string
                             mimetype: string
                         cost_id: 0
+                        cost: 10.2
         '403':
           description: Forbidden
         '404':
diff --git a/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.spec.ts b/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.spec.ts
index a575d52b6..b475ade8a 100644
--- a/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.spec.ts
+++ b/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.spec.ts
@@ -161,6 +161,7 @@ describe("GET /campaigns/campaignId/finance/otherCosts", () => {
         items: expect.arrayContaining([
           expect.objectContaining({
             cost_id: 1,
+            cost: 100.5,
             type: {
               name: "Type 1",
               id: 1,
@@ -185,6 +186,7 @@ describe("GET /campaigns/campaignId/finance/otherCosts", () => {
           }),
           expect.objectContaining({
             cost_id: 2,
+            cost: 200.75,
             type: {
               name: "Type 2",
               id: 2,
@@ -218,6 +220,7 @@ describe("GET /campaigns/campaignId/finance/otherCosts", () => {
         items: expect.arrayContaining([
           expect.objectContaining({
             cost_id: 1,
+            cost: 100.5,
             type: {
               name: "Type 1",
               id: 1,
@@ -230,6 +233,7 @@ describe("GET /campaigns/campaignId/finance/otherCosts", () => {
           }),
           expect.objectContaining({
             cost_id: 2,
+            cost: 200.75,
             type: {
               name: "Type 2",
               id: 2,
@@ -300,6 +304,7 @@ describe("GET /campaigns/campaignId/finance/otherCosts", () => {
       (item: any) => item.cost_id === 10
     );
     expect(costWithoutAttachments).toBeDefined();
+    expect(costWithoutAttachments.cost).toBe(50);
     expect(costWithoutAttachments.attachments).toEqual([]);
   });
 });
diff --git a/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.ts b/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.ts
index e3d48bd92..8234403fd 100644
--- a/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.ts
+++ b/src/routes/campaigns/campaignId/finance/otherCosts/_get/index.ts
@@ -6,6 +6,7 @@ import OpenapiError from "@src/features/OpenapiError";
 
 type OtherCost = {
   cost_id: number;
+  cost: number;
   type: {
     name: string;
     id: number;
@@ -52,7 +53,8 @@ export default class OtherCostsRoute extends CampaignRoute<{
           .as("cost_id"),
         "description",
         "type_id",
-        "supplier_id"
+        "supplier_id",
+        "cost"
       )
       .where("campaign_id", this.cp_id);
 
@@ -84,6 +86,7 @@ export default class OtherCostsRoute extends CampaignRoute<{
 
       return {
         cost_id: cost.cost_id,
+        cost: cost.cost,
         type: {
           name: type?.name || "",
           id: type?.id || 0,
diff --git a/src/schema.ts b/src/schema.ts
index b1f835100..3d6b88bdc 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -5638,22 +5638,23 @@ export interface operations {
       200: {
         content: {
           "application/json": {
-            items?: {
-              cost_id?: number;
-              type?: {
-                name?: string;
-                id?: number;
+            items: {
+              cost_id: number;
+              type: {
+                name: string;
+                id: number;
               };
-              supplier?: {
-                name?: string;
-                id?: number;
+              supplier: {
+                name: string;
+                id: number;
               };
-              description?: string;
-              attachments?: {
-                id?: number;
-                url?: string;
-                mimetype?: string;
+              description: string;
+              attachments: {
+                id: number;
+                url: string;
+                mimetype: string;
               }[];
+              cost: number;
             }[];
           };
         };