diff --git a/.eslintignore b/.eslintignore
index ab7762f..3fbb4e6 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,2 +1,3 @@
 dist
 *.js
+generated/
diff --git a/.nvmrc b/.nvmrc
index e6db45a..48b14e6 100644
--- a/.nvmrc
+++ b/.nvmrc
@@ -1 +1 @@
-18.14.0
+20.14.0
diff --git a/docs/docs/api/height-app-api.patchtasksfieldseffect.md b/docs/docs/api/height-app-api.patchtasksfieldseffect.md
index 25fc60c..56cefa7 100644
--- a/docs/docs/api/height-app-api.patchtasksfieldseffect.md
+++ b/docs/docs/api/height-app-api.patchtasksfieldseffect.md
@@ -18,7 +18,7 @@ Update fields
 export type PatchTasksFieldsEffect = {
     type: 'fields';
     fieldTemplateId: string;
-    fields: {
+    field: {
         text?: string | null;
         date?: string | null;
         recursion?: any | null;
diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index 2d21a63..c21ced2 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -1566,7 +1566,7 @@ components:
       required:
         - type
         - fieldTemplateId
-        - fields
+        - field
       properties:
         type:
           type: string
@@ -1575,7 +1575,7 @@ components:
         fieldTemplateId:
           type: string
           format: uuid
-        fields:
+        field:
           type: object
           properties:
             text:
diff --git a/package.json b/package.json
index 0792111..0e3e4d7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "height-app-api",
-  "version": "1.0.6",
+  "version": "1.0.7",
   "description": "Unofficial TypeScript Wrapper for Height App API",
   "license": "MIT",
   "author": "Beomjun Gil <gil@beomjun.kr> (https://github.com/beomjungil)",
@@ -60,4 +60,4 @@
   "dependencies": {
     "cross-fetch": "^3.1.5"
   }
-}
+}
\ No newline at end of file
diff --git a/src/Height.ts b/src/Height.ts
index 809022e..bccf833 100644
--- a/src/Height.ts
+++ b/src/Height.ts
@@ -1,6 +1,6 @@
 import 'cross-fetch/polyfill';
 import { type HeightConfig } from './HeightConfig';
-import { type ApiConfig, Methods } from './Methods';
+import { Methods, type ApiConfig } from './Methods';
 import omit from './utils/omit';
 
 /**
@@ -28,16 +28,16 @@ export class Height extends Methods {
   /**
    * @param config - Configuration for Height API Wrapper
    */
-  constructor(config: HeightConfig) {
+  constructor (config: HeightConfig) {
     super();
     this.config = config;
-    this.api = (path, init) => fetch('https://api.height.app' + path, {
+    this.api = async (path, init) => fetch('https://api.height.app' + path, {
       ...init,
       headers: {
         ...(init.headers ?? {}),
         Authorization: `api-key ${this.config.secretKey}`,
         'Content-Type': 'application/json',
-      }
+      },
     });
   }
 
@@ -100,7 +100,7 @@ export class Height extends Methods {
     };
   };
 
-  public async apiRequest(config: ApiConfig, request: Record<string, unknown> | undefined): Promise<unknown> {
+  public async apiRequest (config: ApiConfig, request: Record<string, unknown> | undefined): Promise<unknown> {
     const { url, body } = this.normalizeArguments(config, request);
 
     return new Promise((resolve, reject) => {
@@ -112,10 +112,13 @@ export class Height extends Methods {
           : undefined,
       })
         .then((response) => {
+          // eslint-disable-next-line @typescript-eslint/no-floating-promises
           response.json().then(resolve);
         })
         .catch((error) => {
+          // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
           if (error.response != null) {
+            // eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
             reject(error.response.data);
           }
           reject(error);
diff --git a/src/utils/omit.ts b/src/utils/omit.ts
index 8125fdf..e833fa9 100644
--- a/src/utils/omit.ts
+++ b/src/utils/omit.ts
@@ -1,5 +1,6 @@
 
 const omit = <T>(obj: T, ...keys: Array<keyof T>) => {
+  // eslint-disable-next-line @typescript-eslint/consistent-type-assertions
   const ret = {} as {
     [K in keyof typeof obj]: (typeof obj)[K]
   };