diff --git a/package.json b/package.json
index b7682983..205ecdab 100644
--- a/package.json
+++ b/package.json
@@ -75,7 +75,7 @@
   "dependencies": {
     "@stoplight/json": "^3.18.1",
     "@stoplight/json-schema-generator": "1.0.2",
-    "@stoplight/types": "^13.6.0",
+    "@stoplight/types": "^13.12.0",
     "@types/json-schema": "7.0.11",
     "@types/swagger-schema-official": "~2.0.22",
     "@types/type-is": "^1.6.3",
diff --git a/src/oas/__tests__/__snapshots__/operation.test.ts.snap b/src/oas/__tests__/__snapshots__/operation.test.ts.snap
index c06da44f..94eada12 100644
--- a/src/oas/__tests__/__snapshots__/operation.test.ts.snap
+++ b/src/oas/__tests__/__snapshots__/operation.test.ts.snap
@@ -178,6 +178,7 @@ Array [
         },
       ],
     ],
+    "securityDeclarationType": "declared",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -257,6 +258,7 @@ Array [
       },
     ],
     "security": Array [],
+    "securityDeclarationType": "inheritedFromService",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -365,6 +367,7 @@ Array [
       },
     ],
     "security": Array [],
+    "securityDeclarationType": "inheritedFromService",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -409,6 +412,7 @@ Array [
       },
     ],
     "security": Array [],
+    "securityDeclarationType": "inheritedFromService",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -670,6 +674,7 @@ Array [
         },
       ],
     ],
+    "securityDeclarationType": "declared",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -888,6 +893,7 @@ Array [
         },
       ],
     ],
+    "securityDeclarationType": "declared",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -971,6 +977,7 @@ Array [
       },
     ],
     "security": Array [],
+    "securityDeclarationType": "inheritedFromService",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
@@ -1228,6 +1235,7 @@ Array [
         },
       ],
     ],
+    "securityDeclarationType": "declared",
     "servers": Array [
       Object {
         "id": "http_server-abc-https://petstore.swagger.io/v2",
diff --git a/src/oas/__tests__/operation.test.ts b/src/oas/__tests__/operation.test.ts
index 5e4bc4a9..f579cec1 100644
--- a/src/oas/__tests__/operation.test.ts
+++ b/src/oas/__tests__/operation.test.ts
@@ -141,6 +141,7 @@ describe('oas operation', () => {
       extensions: {},
       responses: [],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       summary: '/Update',
       tags: [],
diff --git a/src/oas/operation.ts b/src/oas/operation.ts
index 535efa30..8df8ba1c 100644
--- a/src/oas/operation.ts
+++ b/src/oas/operation.ts
@@ -9,6 +9,7 @@ import type { Fragment, HttpOperationTransformer } from '../types';
 import { TransformerContext, TranslateFunction } from '../types';
 import { getExtensions } from './accessors';
 import { translateToTags } from './tags';
+import { translateToSecurityDeclarationType } from './transformers';
 
 const DEFAULT_METHODS = ['get', 'post', 'put', 'delete', 'options', 'head', 'patch', 'trace'];
 
@@ -95,5 +96,7 @@ export const transformOasOperation: TranslateFunction<
       },
       isString,
     ),
+
+    securityDeclarationType: translateToSecurityDeclarationType(operation),
   };
 };
diff --git a/src/oas/transformers/index.ts b/src/oas/transformers/index.ts
index 1a495f35..0940c13c 100644
--- a/src/oas/transformers/index.ts
+++ b/src/oas/transformers/index.ts
@@ -1,2 +1,3 @@
 export { convertSchema, translateSchemaObject } from './schema/index';
+export { translateToSecurityDeclarationType } from './securities';
 export { translateLogo } from './translateLogo';
diff --git a/src/oas/transformers/securities.ts b/src/oas/transformers/securities.ts
new file mode 100644
index 00000000..fae03f77
--- /dev/null
+++ b/src/oas/transformers/securities.ts
@@ -0,0 +1,18 @@
+import { HttpOperationSecurityDeclarationTypes, IHttpOperation } from '@stoplight/types';
+import type { OperationObject } from 'openapi3-ts/src/model/OpenApi';
+import type { Operation } from 'swagger-schema-official';
+
+export function translateToSecurityDeclarationType({
+  security,
+}: Partial<Operation | OperationObject>): IHttpOperation['securityDeclarationType'] {
+  let securityDeclarationType = HttpOperationSecurityDeclarationTypes.InheritedFromService;
+
+  if (Array.isArray(security)) {
+    securityDeclarationType =
+      security.length === 0
+        ? HttpOperationSecurityDeclarationTypes.None
+        : HttpOperationSecurityDeclarationTypes.Declared;
+  }
+
+  return securityDeclarationType;
+}
diff --git a/src/oas2/__tests__/__fixtures__/id/bundled.ts b/src/oas2/__tests__/__fixtures__/id/bundled.ts
index bcac7049..7ec9f544 100644
--- a/src/oas2/__tests__/__fixtures__/id/bundled.ts
+++ b/src/oas2/__tests__/__fixtures__/id/bundled.ts
@@ -227,6 +227,7 @@ export default {
         },
       ],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [
         {
           id: 'http_server-service_abc-http://localhost:3000',
@@ -369,6 +370,7 @@ export default {
           },
         ],
       ],
+      securityDeclarationType: 'declared',
       servers: [
         {
           id: 'http_server-service_abc-http://localhost:3000',
diff --git a/src/oas2/__tests__/__snapshots__/operation.test.ts.snap b/src/oas2/__tests__/__snapshots__/operation.test.ts.snap
index f92c4c2a..df9020b0 100644
--- a/src/oas2/__tests__/__snapshots__/operation.test.ts.snap
+++ b/src/oas2/__tests__/__snapshots__/operation.test.ts.snap
@@ -78,6 +78,7 @@ Object {
       },
     ],
   ],
+  "securityDeclarationType": "declared",
   "servers": Array [],
   "summary": "osum",
   "tags": Array [],
diff --git a/src/oas2/__tests__/bundle.test.ts b/src/oas2/__tests__/bundle.test.ts
index a7f62d69..319e1e0c 100644
--- a/src/oas2/__tests__/bundle.test.ts
+++ b/src/oas2/__tests__/bundle.test.ts
@@ -109,6 +109,7 @@ describe('bundleOas2Service', () => {
           },
           responses: [],
           security: [],
+          securityDeclarationType: 'inheritedFromService',
           servers: [],
           tags: [],
         },
@@ -129,6 +130,7 @@ describe('bundleOas2Service', () => {
           },
           responses: [],
           security: [],
+          securityDeclarationType: 'inheritedFromService',
           servers: [],
           tags: [],
         },
@@ -151,6 +153,7 @@ describe('bundleOas2Service', () => {
           },
           responses: [],
           security: [],
+          securityDeclarationType: 'inheritedFromService',
           servers: [],
           tags: [],
         },
@@ -269,6 +272,7 @@ describe('bundleOas2Service', () => {
               },
             ],
           ],
+          securityDeclarationType: 'declared',
           servers: [],
           tags: [],
         },
diff --git a/src/oas2/__tests__/operation.test.ts b/src/oas2/__tests__/operation.test.ts
index 627b65f0..a3b4722b 100644
--- a/src/oas2/__tests__/operation.test.ts
+++ b/src/oas2/__tests__/operation.test.ts
@@ -210,6 +210,7 @@ describe('transformOas2Operation', () => {
         },
         responses: [],
         security: [],
+        securityDeclarationType: 'inheritedFromService',
         servers: [],
         tags: [],
         extensions: {},
@@ -259,6 +260,7 @@ describe('transformOas2Operation', () => {
       },
       responses: [],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       tags: [],
       extensions: {},
diff --git a/src/oas3/__tests__/__fixtures__/examples/bundled.ts b/src/oas3/__tests__/__fixtures__/examples/bundled.ts
index 7931419a..4f5150f9 100644
--- a/src/oas3/__tests__/__fixtures__/examples/bundled.ts
+++ b/src/oas3/__tests__/__fixtures__/examples/bundled.ts
@@ -55,6 +55,7 @@ export default {
       },
       responses: [],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [
         {
           id: 'http_server-service_abc-http://localhost:3000',
diff --git a/src/oas3/__tests__/__fixtures__/examples/legacy.ts b/src/oas3/__tests__/__fixtures__/examples/legacy.ts
index 90b0ad42..02a2ac1c 100644
--- a/src/oas3/__tests__/__fixtures__/examples/legacy.ts
+++ b/src/oas3/__tests__/__fixtures__/examples/legacy.ts
@@ -72,6 +72,7 @@ export default [
         url: 'http://localhost:3000',
       },
     ],
+    securityDeclarationType: 'inheritedFromService',
     tags: [],
   },
 ];
diff --git a/src/oas3/__tests__/__fixtures__/id/bundled.ts b/src/oas3/__tests__/__fixtures__/id/bundled.ts
index 33a456e7..b1c349e3 100644
--- a/src/oas3/__tests__/__fixtures__/id/bundled.ts
+++ b/src/oas3/__tests__/__fixtures__/id/bundled.ts
@@ -251,6 +251,7 @@ export default {
         },
       ],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [
         {
           id: 'http_server-service_abc-http://localhost:3000',
@@ -365,6 +366,7 @@ export default {
           },
         ],
       ],
+      securityDeclarationType: 'declared',
       servers: [
         {
           id: 'http_server-service_abc-http://localhost:3000',
diff --git a/src/oas3/__tests__/__fixtures__/id/legacy.ts b/src/oas3/__tests__/__fixtures__/id/legacy.ts
index dd4bdb03..98099b5d 100644
--- a/src/oas3/__tests__/__fixtures__/id/legacy.ts
+++ b/src/oas3/__tests__/__fixtures__/id/legacy.ts
@@ -235,6 +235,7 @@ export default [
       },
     ],
     security: [],
+    securityDeclarationType: 'inheritedFromService',
     extensions: {},
   },
 
@@ -470,6 +471,7 @@ export default [
         },
       ],
     ],
+    securityDeclarationType: 'declared',
     extensions: {},
   },
 ];
diff --git a/src/oas3/__tests__/__fixtures__/shared-components/bundled.ts b/src/oas3/__tests__/__fixtures__/shared-components/bundled.ts
index f7c55b52..f9b2199a 100644
--- a/src/oas3/__tests__/__fixtures__/shared-components/bundled.ts
+++ b/src/oas3/__tests__/__fixtures__/shared-components/bundled.ts
@@ -26,6 +26,7 @@ export default {
         },
       ],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       summary: 'Get a organization repository',
       tags: [],
@@ -55,6 +56,7 @@ export default {
         },
       ],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       summary: 'Create a organization repository',
       tags: [],
diff --git a/src/oas3/__tests__/__fixtures__/shared-components/legacy.ts b/src/oas3/__tests__/__fixtures__/shared-components/legacy.ts
index 51c66562..2103b760 100644
--- a/src/oas3/__tests__/__fixtures__/shared-components/legacy.ts
+++ b/src/oas3/__tests__/__fixtures__/shared-components/legacy.ts
@@ -130,6 +130,7 @@ export default [
     },
     tags: [],
     security: [],
+    securityDeclarationType: 'inheritedFromService',
     extensions: {},
   },
   /**
@@ -276,6 +277,7 @@ export default [
     },
     tags: [],
     security: [],
+    securityDeclarationType: 'inheritedFromService',
     extensions: {},
   },
 ];
diff --git a/src/oas3/__tests__/__snapshots__/operation.test.ts.snap b/src/oas3/__tests__/__snapshots__/operation.test.ts.snap
index 40d67068..4fc8c192 100644
--- a/src/oas3/__tests__/__snapshots__/operation.test.ts.snap
+++ b/src/oas3/__tests__/__snapshots__/operation.test.ts.snap
@@ -18,6 +18,7 @@ Object {
       },
       "responses": Array [],
       "security": Array [],
+      "securityDeclarationType": "inheritedFromService",
       "servers": Array [],
       "tags": Array [],
     },
@@ -58,6 +59,7 @@ Object {
   },
   "responses": Array [],
   "security": Array [],
+  "securityDeclarationType": "inheritedFromService",
   "servers": Array [],
   "tags": Array [],
 }
@@ -80,6 +82,7 @@ Object {
   },
   "responses": Array [],
   "security": Array [],
+  "securityDeclarationType": "inheritedFromService",
   "servers": Array [],
   "summary": "summary",
   "tags": Array [],
@@ -103,6 +106,7 @@ Object {
   },
   "responses": Array [],
   "security": Array [],
+  "securityDeclarationType": "inheritedFromService",
   "servers": Array [
     Object {
       "id": Any<String>,
@@ -132,6 +136,7 @@ Object {
   },
   "responses": Array [],
   "security": Array [],
+  "securityDeclarationType": "inheritedFromService",
   "servers": Array [
     Object {
       "id": Any<String>,
@@ -161,6 +166,7 @@ Object {
   },
   "responses": Array [],
   "security": Array [],
+  "securityDeclarationType": "inheritedFromService",
   "servers": Array [],
   "summary": "summary",
   "tags": Array [
@@ -189,6 +195,7 @@ Object {
   },
   "responses": Array [],
   "security": Array [],
+  "securityDeclarationType": "inheritedFromService",
   "servers": Array [
     Object {
       "id": Any<String>,
diff --git a/src/oas3/__tests__/accessors.test.ts b/src/oas3/__tests__/accessors.test.ts
index 7eb418bf..533bf32e 100644
--- a/src/oas3/__tests__/accessors.test.ts
+++ b/src/oas3/__tests__/accessors.test.ts
@@ -46,6 +46,7 @@ describe('getOas3Securities', () => {
           'operationScheme',
           {
             type: 'apiKey',
+            extensions: {},
           },
         ],
       ],
@@ -72,6 +73,7 @@ describe('getOas3Securities', () => {
           'specScheme',
           {
             type: 'apiKey',
+            extensions: {},
           },
         ],
       ],
@@ -102,6 +104,7 @@ describe('getOas3Securities', () => {
           'specScheme',
           {
             type: 'apiKey',
+            extensions: {},
           },
         ],
       ],
diff --git a/src/oas3/__tests__/bundle.test.ts b/src/oas3/__tests__/bundle.test.ts
index 9b673506..4e8f2766 100644
--- a/src/oas3/__tests__/bundle.test.ts
+++ b/src/oas3/__tests__/bundle.test.ts
@@ -107,6 +107,7 @@ describe('bundleOas3Service', () => {
             ],
           },
           security: [],
+          securityDeclarationType: 'inheritedFromService',
           servers: [],
         },
       ],
@@ -684,6 +685,7 @@ describe('bundleOas3Service', () => {
             },
           ],
           security: [],
+          securityDeclarationType: 'inheritedFromService',
           servers: [],
           tags: [],
         },
@@ -743,6 +745,7 @@ describe('bundleOas3Service', () => {
           },
           responses: [],
           security: [],
+          securityDeclarationType: 'inheritedFromService',
           servers: [],
           tags: [],
         },
@@ -849,6 +852,7 @@ describe('bundleOas3Service', () => {
               },
             ],
           ],
+          securityDeclarationType: 'declared',
           servers: [],
           tags: [],
         },
diff --git a/src/oas3/__tests__/operation.test.ts b/src/oas3/__tests__/operation.test.ts
index 23544df4..e6087452 100644
--- a/src/oas3/__tests__/operation.test.ts
+++ b/src/oas3/__tests__/operation.test.ts
@@ -728,6 +728,7 @@ describe('transformOas3Operation', () => {
       },
       responses: [],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       tags: [],
       extensions: {},
@@ -809,6 +810,7 @@ describe('transformOas3Operation', () => {
       },
       responses: [],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       tags: [],
       extensions: {},
@@ -1055,6 +1057,7 @@ describe('transformOas3Operation', () => {
         },
       ],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       servers: [],
       tags: [],
       extensions: {},
@@ -1284,6 +1287,7 @@ describe('transformOas3Operation', () => {
       },
       tags: [],
       security: [],
+      securityDeclarationType: 'inheritedFromService',
       extensions: {},
     });
   });
diff --git a/src/oas3/accessors.ts b/src/oas3/accessors.ts
index 79ea47bb..cd8c5621 100644
--- a/src/oas3/accessors.ts
+++ b/src/oas3/accessors.ts
@@ -4,6 +4,7 @@ import pickBy = require('lodash.pickby');
 import type { OpenAPIObject } from 'openapi3-ts';
 
 import { isNonNullable } from '../guards';
+import { getExtensions } from '../oas/accessors';
 import { entries } from '../utils';
 import { isSecurityScheme } from './guards';
 
@@ -39,11 +40,18 @@ export function getSecurities(
                   },
                 ]),
               ),
+              extensions: getExtensions(definition),
             },
           ];
         }
 
-        return [opScheme, definition];
+        return [
+          opScheme,
+          {
+            ...definition,
+            extensions: getExtensions(definition),
+          },
+        ];
       })
       .filter(isNonNullable);
   });
diff --git a/src/oas3/operation.ts b/src/oas3/operation.ts
index a71a7b99..c67cd82f 100644
--- a/src/oas3/operation.ts
+++ b/src/oas3/operation.ts
@@ -1,4 +1,4 @@
-import type { DeepPartial, IHttpOperation } from '@stoplight/types';
+import { DeepPartial, IHttpOperation } from '@stoplight/types';
 import pickBy = require('lodash.pickby');
 import type { OpenAPIObject } from 'openapi3-ts';
 
diff --git a/src/oas3/transformers/__tests__/callbacks.test.ts b/src/oas3/transformers/__tests__/callbacks.test.ts
index f96f217c..c4d3de88 100644
--- a/src/oas3/transformers/__tests__/callbacks.test.ts
+++ b/src/oas3/transformers/__tests__/callbacks.test.ts
@@ -142,6 +142,7 @@ describe('translateToCallbacks', () => {
           },
         ],
         security: [],
+        securityDeclarationType: 'inheritedFromService',
         servers: [],
         tags: [],
       },
@@ -193,6 +194,7 @@ describe('translateToCallbacks', () => {
           },
         ],
         security: [],
+        securityDeclarationType: 'inheritedFromService',
         servers: [],
         tags: [],
       },
@@ -244,6 +246,7 @@ describe('translateToCallbacks', () => {
           },
         ],
         security: [],
+        securityDeclarationType: 'inheritedFromService',
         servers: [],
         tags: [],
       },
diff --git a/src/oas3/transformers/securities.ts b/src/oas3/transformers/securities.ts
index b8231ea7..4944422f 100644
--- a/src/oas3/transformers/securities.ts
+++ b/src/oas3/transformers/securities.ts
@@ -29,17 +29,16 @@ export const translateToSingleSecurity = withContext<
     Optional<HttpSecurityScheme>
   >
 >(function ([key, securityScheme]) {
-  const baseObject: { id: string; key: string; description?: string; extensions?: Extensions } = {
+  const baseObject: { id: string; key: string; description?: string; extensions: Extensions } = {
     id: this.generateId.httpSecurity({ keyOrName: key }),
     key,
+    extensions: getExtensions(securityScheme),
   };
 
   if (securityScheme.description) {
     baseObject.description = securityScheme.description;
   }
 
-  baseObject.extensions = getExtensions(securityScheme);
-
   if (securityScheme.type === 'apiKey') {
     return {
       ...baseObject,
diff --git a/src/postman/__tests__/operation.test.ts b/src/postman/__tests__/operation.test.ts
index f003a330..7ebc730b 100644
--- a/src/postman/__tests__/operation.test.ts
+++ b/src/postman/__tests__/operation.test.ts
@@ -95,7 +95,15 @@ describe('transformPostmanCollectionOperation()', () => {
           ).toEqual(
             expect.objectContaining({
               security: [
-                [{ id: expect.stringMatching(/^_gen_[0-9a-f]{6}$/), key: 'http-0', scheme: 'basic', type: 'http' }],
+                [
+                  {
+                    id: expect.stringMatching(/^_gen_[0-9a-f]{6}$/),
+                    key: 'http-0',
+                    scheme: 'basic',
+                    type: 'http',
+                    extensions: {},
+                  },
+                ],
               ],
             }),
           );
diff --git a/src/postman/__tests__/service.test.ts b/src/postman/__tests__/service.test.ts
index 6d111dbf..9ae4c343 100644
--- a/src/postman/__tests__/service.test.ts
+++ b/src/postman/__tests__/service.test.ts
@@ -34,6 +34,7 @@ describe('transformPostmanCollectionService()', () => {
               key: 'http-0',
               scheme: 'basic',
               type: 'http',
+              extensions: {},
             },
           ],
         },
diff --git a/src/postman/transformers/__tests__/securitySchemes.spec.ts b/src/postman/transformers/__tests__/securitySchemes.spec.ts
index 396c4fa4..f81cb2ff 100644
--- a/src/postman/transformers/__tests__/securitySchemes.spec.ts
+++ b/src/postman/transformers/__tests__/securitySchemes.spec.ts
@@ -37,6 +37,7 @@ describe('transformSecurityScheme()', () => {
           key: 'auth-http',
           type: 'http',
           scheme: 'basic',
+          extensions: {},
         },
       });
     });
@@ -75,6 +76,7 @@ describe('transformSecurityScheme()', () => {
           key: 'auth-http',
           type: 'http',
           scheme: 'digest',
+          extensions: {},
         },
       });
     });
@@ -103,6 +105,7 @@ describe('transformSecurityScheme()', () => {
           key: 'auth-http',
           type: 'http',
           scheme: 'bearer',
+          extensions: {},
         },
       });
     });
@@ -143,6 +146,7 @@ describe('transformSecurityScheme()', () => {
             type: 'apiKey',
             name: 'TestApiKey',
             in: 'query',
+            extensions: {},
           },
         });
       });
@@ -177,6 +181,7 @@ describe('transformSecurityScheme()', () => {
             type: 'apiKey',
             name: 'TestApiKey',
             in: 'header',
+            extensions: {},
           },
         });
       });
@@ -437,6 +442,7 @@ describe('transformSecurityScheme()', () => {
             description: 'OAuth2 Access Token',
             scheme: 'bearer',
             type: 'http',
+            extensions: {},
           },
         });
       });
@@ -677,6 +683,7 @@ describe('transformPostmanSecuritySchemes()', () => {
             key: 'http-0',
             scheme: 'basic',
             type: 'http',
+            extensions: {},
           },
           type: 'securityScheme',
         },
@@ -686,6 +693,7 @@ describe('transformPostmanSecuritySchemes()', () => {
             key: 'http-1',
             scheme: 'digest',
             type: 'http',
+            extensions: {},
           },
           type: 'securityScheme',
         },
@@ -785,6 +793,7 @@ describe('transformPostmanSecuritySchemes()', () => {
             key: 'http-0',
             scheme: 'basic',
             type: 'http',
+            extensions: {},
           },
           type: 'securityScheme',
         },
@@ -796,20 +805,26 @@ describe('transformPostmanSecuritySchemes()', () => {
 describe.each<[string, PostmanSecurityScheme, PostmanSecurityScheme, boolean]>([
   [
     'two equal security schemes',
-    { type: 'securityScheme', securityScheme: { id: '', key: '1', type: 'http', scheme: 'basic' } },
-    { type: 'securityScheme', securityScheme: { id: '', key: '2', type: 'http', scheme: 'basic' } },
+    { type: 'securityScheme', securityScheme: { id: '', key: '1', type: 'http', scheme: 'basic', extensions: {} } },
+    { type: 'securityScheme', securityScheme: { id: '', key: '2', type: 'http', scheme: 'basic', extensions: {} } },
     true,
   ],
   [
     'different types',
-    { type: 'securityScheme', securityScheme: { id: '', key: '1', type: 'http', scheme: 'basic' } },
+    { type: 'securityScheme', securityScheme: { id: '', key: '1', type: 'http', scheme: 'basic', extensions: {} } },
     { type: 'headerParams', headerParams: [] },
     false,
   ],
   [
     'two different',
-    { type: 'securityScheme', securityScheme: { id: '', key: '1', type: 'http', scheme: 'basic' } },
-    { type: 'securityScheme', securityScheme: { id: '', key: '2', type: 'http', scheme: 'digest' } },
+    {
+      type: 'securityScheme',
+      securityScheme: { id: '', key: '1', type: 'http', scheme: 'basic', extensions: {} },
+    },
+    {
+      type: 'securityScheme',
+      securityScheme: { id: '', key: '2', type: 'http', scheme: 'digest', extensions: {} },
+    },
     false,
   ],
   [
diff --git a/src/postman/transformers/securityScheme.ts b/src/postman/transformers/securityScheme.ts
index ba48f408..835669b7 100644
--- a/src/postman/transformers/securityScheme.ts
+++ b/src/postman/transformers/securityScheme.ts
@@ -131,6 +131,7 @@ export function transformSecurityScheme(
             type: 'http',
             scheme: 'bearer',
             description: 'OAuth2 Access Token',
+            extensions: {},
           },
         };
       }
@@ -144,6 +145,7 @@ export function transformSecurityScheme(
           type: 'apiKey',
           name: parameters.get('key'),
           in: parameters.get('in') || 'header',
+          extensions: {},
         },
       };
 
@@ -157,6 +159,7 @@ export function transformSecurityScheme(
           key: nextKey('http'),
           type: 'http',
           scheme: auth.type,
+          extensions: {},
         },
       };
 
diff --git a/yarn.lock b/yarn.lock
index 1d484b07..f187b77b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1491,10 +1491,10 @@
     "@types/json-schema" "^7.0.4"
     utility-types "^3.10.0"
 
-"@stoplight/types@^13.6.0":
-  version "13.6.0"
-  resolved "https://registry.yarnpkg.com/@stoplight/types/-/types-13.6.0.tgz#96c6aaae05858b36f589821cd52c95aa9b205ce7"
-  integrity sha512-dzyuzvUjv3m1wmhPfq82lCVYGcXG0xUYgqnWfCq3PCVR4BKFhjdkHrnJ+jIDoMKvXb05AZP/ObQF6+NpDo29IQ==
+"@stoplight/types@^13.12.0":
+  version "13.12.0"
+  resolved "https://registry.yarnpkg.com/@stoplight/types/-/types-13.12.0.tgz#6ea1c6a27d6664217398d6378dad93b88e65422e"
+  integrity sha512-lpyB8b5cNcg/CyQ9W7Q2BxPkHhBA8+9byviGT6uL2Ok/5iao0poCnFUH++Cd7VN1/RaXrv0LT9fyOg4fJIl0iA==
   dependencies:
     "@types/json-schema" "^7.0.4"
     utility-types "^3.10.0"