diff --git a/packages/twenty-server/src/engine/core-modules/open-api/utils/__tests__/components.utils.spec.ts b/packages/twenty-server/src/engine/core-modules/open-api/utils/__tests__/components.utils.spec.ts
index ca960dfd9f..d8a0e6e78c 100644
--- a/packages/twenty-server/src/engine/core-modules/open-api/utils/__tests__/components.utils.spec.ts
+++ b/packages/twenty-server/src/engine/core-modules/open-api/utils/__tests__/components.utils.spec.ts
@@ -259,7 +259,18 @@ describe('computeSchemaComponents', () => {
         "properties": {
           "additionalPhones": {
             "items": {
-              "type": "string",
+              "properties": {
+                "callingCode": {
+                  "type": "string",
+                },
+                "countryCode": {
+                  "type": "string",
+                },
+                "number": {
+                  "type": "string",
+                },
+              },
+              "type": "object",
             },
             "type": "array",
           },
@@ -491,7 +502,18 @@ describe('computeSchemaComponents', () => {
         "properties": {
           "additionalPhones": {
             "items": {
-              "type": "string",
+              "properties": {
+                "callingCode": {
+                  "type": "string",
+                },
+                "countryCode": {
+                  "type": "string",
+                },
+                "number": {
+                  "type": "string",
+                },
+              },
+              "type": "object",
             },
             "type": "array",
           },
@@ -752,7 +774,18 @@ describe('computeSchemaComponents', () => {
         "properties": {
           "additionalPhones": {
             "items": {
-              "type": "string",
+              "properties": {
+                "callingCode": {
+                  "type": "string",
+                },
+                "countryCode": {
+                  "type": "string",
+                },
+                "number": {
+                  "type": "string",
+                },
+              },
+              "type": "object",
             },
             "type": "array",
           },
diff --git a/packages/twenty-server/src/engine/utils/convert-object-metadata-to-schema-properties.util.ts b/packages/twenty-server/src/engine/utils/convert-object-metadata-to-schema-properties.util.ts
index b98ee47054..98ab50ef75 100644
--- a/packages/twenty-server/src/engine/utils/convert-object-metadata-to-schema-properties.util.ts
+++ b/packages/twenty-server/src/engine/utils/convert-object-metadata-to-schema-properties.util.ts
@@ -308,7 +308,18 @@ export const convertObjectMetadataToSchemaProperties = ({
             additionalPhones: {
               type: 'array',
               items: {
-                type: 'string',
+                type: 'object',
+                properties: {
+                  number: {
+                    type: 'string',
+                  },
+                  countryCode: {
+                    type: 'string',
+                  },
+                  callingCode: {
+                    type: 'string',
+                  },
+                },
               },
             },
             primaryPhoneCountryCode: {