diff --git a/packages/openapi-schema-validator/index.ts b/packages/openapi-schema-validator/index.ts
index 65fbe817..207c3fd4 100644
--- a/packages/openapi-schema-validator/index.ts
+++ b/packages/openapi-schema-validator/index.ts
@@ -2,7 +2,6 @@ import ajv, { ValidateFunction, ErrorObject } from 'ajv';
 import addFormats from 'ajv-formats';
 const openapi2Schema = require('./resources/openapi-2.0.json');
 const openapi3Schema = require('./resources/openapi-3.0.json');
-const merge = require('lodash.merge');
 import { IJsonSchema, OpenAPI } from 'openapi-types';
 
 export interface IOpenAPISchemaValidator {
@@ -28,7 +27,7 @@ export default class OpenAPISchemaValidator implements IOpenAPISchemaValidator {
     const v = new ajv({ allErrors: true, strict: false });
     addFormats(v);
     const version = (args && parseInt(String(args.version), 10)) || 2;
-    const schema = merge(
+    const schema = Object.assign(
       {},
       version === 2 ? openapi2Schema : openapi3Schema,
       args ? args.extensions : {}
diff --git a/packages/openapi-schema-validator/package.json b/packages/openapi-schema-validator/package.json
index 33acb0ec..335aef81 100644
--- a/packages/openapi-schema-validator/package.json
+++ b/packages/openapi-schema-validator/package.json
@@ -28,7 +28,6 @@
   "dependencies": {
     "ajv": "^8.1.0",
     "ajv-formats": "^2.0.2",
-    "lodash.merge": "^4.6.1",
     "openapi-types": "^12.1.3"
   }
 }