diff --git a/.eslintrc b/.eslintrc
index 391abb7a..cac942a0 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,6 +1,9 @@
 {
   "extends": ["@readme/eslint-config", "@readme/eslint-config/typescript"],
   "root": true,
+  "rules": {
+    "unicorn/prefer-node-protocol": "error"
+  },
   "overrides": [
     {
       "files": ["bin/**"],
diff --git a/bin/build-markdown.js b/bin/build-markdown.js
index 93f2ed90..2c7dcdc9 100644
--- a/bin/build-markdown.js
+++ b/bin/build-markdown.js
@@ -1,5 +1,5 @@
-const fs = require('fs');
-const path = require('path');
+const fs = require('node:fs');
+const path = require('node:path');
 
 const readme = fs.readFileSync('README.md', 'utf-8');
 
diff --git a/packages/api/.eslintrc b/packages/api/.eslintrc
index a0f07c94..9a22ff04 100644
--- a/packages/api/.eslintrc
+++ b/packages/api/.eslintrc
@@ -1,7 +1,4 @@
 {
-  "rules": {
-    "@typescript-eslint/no-explicit-any": "off" // @todo fix these eventually
-  },
   "overrides": [
     {
       "files": ["bin/api"],
diff --git a/packages/api/src/codegen/languages/typescript.ts b/packages/api/src/codegen/languages/typescript.ts
index 194596f1..9f399c2c 100644
--- a/packages/api/src/codegen/languages/typescript.ts
+++ b/packages/api/src/codegen/languages/typescript.ts
@@ -13,8 +13,8 @@ import type {
 } from 'ts-morph';
 import type { PackageJson } from 'type-fest';
 
-import fs from 'fs';
-import path from 'path';
+import fs from 'node:fs';
+import path from 'node:path';
 
 import execa from 'execa';
 import setWith from 'lodash.setwith';
@@ -62,12 +62,12 @@ export default class TSGenerator extends CodeGeneratorLanguage {
     string,
     // Operation-level type
     | {
-        body?: any;
-        metadata?: any;
-        response?: Record<string, any>;
+        body?: unknown;
+        metadata?: unknown;
+        response?: Record<string, unknown>;
       }
     // Wholesale collection of `$ref` pointer types
-    | Record<string, any>
+    | Record<string, unknown>
   >;
 
   usesHTTPMethodRangeInterface = false;
@@ -807,7 +807,7 @@ sdk.server('https://eu.api.example.com/v14');`),
       .reduce((prev, next) => Object.assign(prev, next));
 
     return Object.entries(res)
-      .map(([paramType, schema]: [string, string | unknown]) => {
+      .map(([paramType, schema]: [string, string | SchemaObject]) => {
         let typeName;
 
         if (typeof schema === 'string' && schema.startsWith('::convert::')) {
@@ -816,7 +816,7 @@ sdk.server('https://eu.api.example.com/v14');`),
           typeName = schema.replace('::convert::', '');
         } else {
           typeName = generateTypeName(operationId, paramType, 'param');
-          this.addSchemaToExport(schema, typeName, `${generateTypeName(operationId)}.${paramType}`);
+          this.addSchemaToExport(schema as SchemaObject, typeName, `${generateTypeName(operationId)}.${paramType}`);
         }
 
         return {
@@ -901,7 +901,7 @@ sdk.server('https://eu.api.example.com/v14');`),
    * Add a given schema into our schema dataset that we'll be be exporting as types.
    *
    */
-  addSchemaToExport(schema: any, typeName: string, pointer: string) {
+  addSchemaToExport(schema: SchemaObject, typeName: string, pointer: string) {
     if (this.types.has(typeName)) {
       return;
     }
diff --git a/packages/api/src/fetcher.ts b/packages/api/src/fetcher.ts
index cd5d6040..f68171f4 100644
--- a/packages/api/src/fetcher.ts
+++ b/packages/api/src/fetcher.ts
@@ -1,7 +1,7 @@
 import type { OASDocument } from 'oas/dist/rmoas.types';
 
-import fs from 'fs';
-import path from 'path';
+import fs from 'node:fs';
+import path from 'node:path';
 
 import OpenAPIParser from '@readme/openapi-parser';
 import yaml from 'js-yaml';
@@ -114,7 +114,7 @@ export default class Fetcher {
     });
   }
 
-  static validate(json: any) {
+  static validate(json: OASDocument) {
     if (json.swagger) {
       throw new Error('Sorry, this module only supports OpenAPI definitions.');
     }
diff --git a/packages/api/src/storage.ts b/packages/api/src/storage.ts
index 71239a26..b3896e41 100644
--- a/packages/api/src/storage.ts
+++ b/packages/api/src/storage.ts
@@ -1,7 +1,7 @@
 import type { OASDocument } from 'oas/dist/rmoas.types';
 
-import fs from 'fs';
-import path from 'path';
+import fs from 'node:fs';
+import path from 'node:path';
 
 import makeDir from 'make-dir';
 import ssri from 'ssri';
diff --git a/packages/api/test/codegen/languages/typescript.test.ts b/packages/api/test/codegen/languages/typescript.test.ts
index cebefed4..aadb1546 100644
--- a/packages/api/test/codegen/languages/typescript.test.ts
+++ b/packages/api/test/codegen/languages/typescript.test.ts
@@ -1,7 +1,7 @@
 import type { TSGeneratorOptions } from '../../../src/codegen/languages/typescript';
 
-import { promises as fs } from 'fs';
-import path from 'path';
+import fs from 'node:fs/promises';
+import path from 'node:path';
 
 import { responses as mockResponse } from '@api/test-utils/fetch-mock';
 import loadSpec from '@api/test-utils/load-spec';
diff --git a/packages/api/test/fetcher.test.ts b/packages/api/test/fetcher.test.ts
index 2317d29c..5acf7be9 100644
--- a/packages/api/test/fetcher.test.ts
+++ b/packages/api/test/fetcher.test.ts
@@ -1,5 +1,5 @@
-import assert from 'assert';
-import fs from 'fs/promises';
+import assert from 'node:assert';
+import fs from 'node:fs/promises';
 
 import loadSpec from '@api/test-utils/load-spec';
 import fetchMock from 'fetch-mock';
diff --git a/packages/api/test/storage.test.ts b/packages/api/test/storage.test.ts
index 21eb6d00..a95472d8 100644
--- a/packages/api/test/storage.test.ts
+++ b/packages/api/test/storage.test.ts
@@ -1,8 +1,8 @@
 import type { OASDocument } from 'oas/dist/rmoas.types';
 
-import assert from 'assert';
-import fs from 'fs/promises';
-import path from 'path';
+import assert from 'node:assert';
+import fs from 'node:fs/promises';
+import path from 'node:path';
 
 import loadSpec from '@api/test-utils/load-spec';
 import fetchMock from 'fetch-mock';
diff --git a/packages/core/.eslintrc b/packages/core/.eslintrc
index 7ea05f4f..fe5cd651 100644
--- a/packages/core/.eslintrc
+++ b/packages/core/.eslintrc
@@ -1,7 +1,5 @@
 {
   "rules": {
-    "@typescript-eslint/no-explicit-any": "off", // @todo fix these eventually
-
     "no-restricted-imports": [
       "error",
       {
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index e7dd1429..b453db37 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -1,3 +1,4 @@
+import type { Har } from 'har-format';
 import type Oas from 'oas';
 import type { Operation } from 'oas';
 import type { HttpMethods } from 'oas/dist/rmoas.types';
@@ -121,7 +122,7 @@ export default class APICore {
         init.signal = controller.signal;
       }
 
-      return fetchHar(har as any, {
+      return fetchHar(har as Har, {
         files: data.files || {},
         init,
         userAgent: this.userAgent,
diff --git a/packages/core/src/lib/parseResponse.ts b/packages/core/src/lib/parseResponse.ts
index 48095fff..5a7e6c69 100644
--- a/packages/core/src/lib/parseResponse.ts
+++ b/packages/core/src/lib/parseResponse.ts
@@ -8,6 +8,7 @@ export default async function parseResponse<HTTPStatus extends number = number>(
 
   const responseBody = await response.text();
 
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
   let data: any = responseBody;
   if (isJSON) {
     try {
diff --git a/packages/core/src/lib/prepareParams.ts b/packages/core/src/lib/prepareParams.ts
index c4ef105b..856d6aee 100644
--- a/packages/core/src/lib/prepareParams.ts
+++ b/packages/core/src/lib/prepareParams.ts
@@ -1,10 +1,10 @@
-import type { ReadStream } from 'fs';
+import type { ReadStream } from 'node:fs';
 import type { Operation } from 'oas';
 import type { ParameterObject, SchemaObject } from 'oas/dist/rmoas.types';
 
-import fs from 'fs';
-import path from 'path';
-import stream from 'stream';
+import fs from 'node:fs';
+import path from 'node:path';
+import stream from 'node:stream';
 
 import caseless from 'caseless';
 import DatauriParser from 'datauri/parser';
@@ -41,11 +41,12 @@ function digestParameters(parameters: ParameterObject[]): Record<string, Paramet
 }
 
 // https://github.com/you-dont-need/You-Dont-Need-Lodash-Underscore#_isempty
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 function isEmpty(obj: any) {
   return [Object, Array].includes((obj || {}).constructor) && !Object.entries(obj || {}).length;
 }
 
-function isObject(thing: any) {
+function isObject(thing: unknown) {
   if (thing instanceof stream.Readable) {
     return false;
   }
@@ -53,11 +54,11 @@ function isObject(thing: any) {
   return typeof thing === 'object' && thing !== null && !Array.isArray(thing);
 }
 
-function isPrimitive(obj: any) {
+function isPrimitive(obj: unknown) {
   return obj === null || typeof obj === 'number' || typeof obj === 'string';
 }
 
-function merge(src: any, target: any) {
+function merge(src: unknown, target: unknown) {
   if (Array.isArray(target)) {
     // @todo we need to add support for merging array defaults with array body/metadata arguments
     return target;
@@ -187,9 +188,11 @@ export default async function prepareParams(operation: Operation, body?: unknown
   const jsonSchemaDefaults = jsonSchema ? getJSONSchemaDefaults(jsonSchema) : {};
 
   const params: {
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     body?: any;
     cookie?: Record<string, string | number | boolean>;
     files?: Record<string, Buffer>;
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     formData?: any;
     header?: Record<string, string | number | boolean>;
     path?: Record<string, string | number | boolean>;
@@ -329,6 +332,7 @@ export default async function prepareParams(operation: Operation, body?: unknown
     if (!('query' in params)) params.query = {};
 
     Object.entries(digestedParameters).forEach(([paramName, param]) => {
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
       let value: any;
       let metadataHeaderParam;
       if (typeof metadata === 'object' && !isEmpty(metadata)) {
diff --git a/packages/core/test/index.test.ts b/packages/core/test/index.test.ts
index 57598803..e8ee0c11 100644
--- a/packages/core/test/index.test.ts
+++ b/packages/core/test/index.test.ts
@@ -1,4 +1,4 @@
-import assert from 'assert';
+import assert from 'node:assert';
 
 import { responses as mockResponse } from '@api/test-utils/fetch-mock';
 import loadSpec from '@api/test-utils/load-spec';
diff --git a/packages/core/test/lib/prepareParams.test.ts b/packages/core/test/lib/prepareParams.test.ts
index 0838cd29..3b4b49f6 100644
--- a/packages/core/test/lib/prepareParams.test.ts
+++ b/packages/core/test/lib/prepareParams.test.ts
@@ -1,4 +1,4 @@
-import fs from 'fs';
+import fs from 'node:fs';
 
 import payloadExamples from '@api/test-utils/definitions/payloads.json';
 import loadSpec from '@api/test-utils/load-spec';
@@ -169,7 +169,7 @@ describe('#prepareParams', () => {
 
         const res = await prepareParams(operation, body);
         expect(res.body).toContain('data:image/png;name=owlbert.png;base64,');
-        expect(res.files['owlbert.png']).toBeInstanceOf(Buffer);
+        expect(res.files?.['owlbert.png']).toBeInstanceOf(Buffer);
       });
 
       it('should support a file stream payload', async () => {
@@ -178,7 +178,7 @@ describe('#prepareParams', () => {
 
         const res = await prepareParams(operation, body);
         expect(res.body).toContain('data:image/png;name=owlbert.png;base64,');
-        expect(res.files['owlbert.png']).toBeInstanceOf(Buffer);
+        expect(res.files?.['owlbert.png']).toBeInstanceOf(Buffer);
       });
     });
 
@@ -191,7 +191,7 @@ describe('#prepareParams', () => {
 
         const res = await prepareParams(operation, body);
         expect(res.body.documentFile).toContain('data:application/json;name=readme.json;base64,');
-        expect(res.files['readme.json']).toBeInstanceOf(Buffer);
+        expect(res.files?.['readme.json']).toBeInstanceOf(Buffer);
       });
 
       it('should handle when the file path is relative', async () => {
@@ -202,7 +202,7 @@ describe('#prepareParams', () => {
 
         const res = await prepareParams(operation, body);
         expect(res.body.documentFile).toContain('data:image/png;name=owlbert.png;base64,');
-        expect(res.files['owlbert.png']).toBeInstanceOf(Buffer);
+        expect(res.files?.['owlbert.png']).toBeInstanceOf(Buffer);
       });
 
       it('should handle a multipart body when a property is a file stream', async () => {
@@ -213,7 +213,7 @@ describe('#prepareParams', () => {
 
         const res = await prepareParams(operation, body);
         expect(res.body.documentFile).toContain('data:image/png;name=owlbert.png;base64,');
-        expect(res.files['owlbert.png']).toBeInstanceOf(Buffer);
+        expect(res.files?.['owlbert.png']).toBeInstanceOf(Buffer);
       });
     });
   });
diff --git a/packages/httpsnippet-client-api/.eslintrc b/packages/httpsnippet-client-api/.eslintrc
deleted file mode 100644
index 8b8e4250..00000000
--- a/packages/httpsnippet-client-api/.eslintrc
+++ /dev/null
@@ -1,5 +0,0 @@
-{
-  "rules": {
-    "@typescript-eslint/no-explicit-any": "off"
-  }
-}
diff --git a/packages/httpsnippet-client-api/src/index.ts b/packages/httpsnippet-client-api/src/index.ts
index d42c35a3..b30eb53d 100644
--- a/packages/httpsnippet-client-api/src/index.ts
+++ b/packages/httpsnippet-client-api/src/index.ts
@@ -10,6 +10,7 @@ import stringifyObject from 'stringify-object';
 
 const { matchesMimeType } = utils;
 
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
 function stringify(obj: any, opts = {}) {
   return stringifyObject(obj, { indent: '  ', ...opts });
 }
@@ -241,6 +242,7 @@ const client: Client<APIOptions> = {
       }
     }
 
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     let body: any;
     switch (postData.mimeType) {
       case 'application/x-www-form-urlencoded':
diff --git a/packages/httpsnippet-client-api/test/index.test.ts b/packages/httpsnippet-client-api/test/index.test.ts
index 6faa4d85..a0dd6f15 100644
--- a/packages/httpsnippet-client-api/test/index.test.ts
+++ b/packages/httpsnippet-client-api/test/index.test.ts
@@ -2,9 +2,9 @@ import type { HarRequest, Request } from '@readme/httpsnippet';
 import type { Client } from '@readme/httpsnippet/dist/targets/targets';
 import type { OASDocument } from 'oas/dist/rmoas.types';
 
-import { readdirSync } from 'fs';
-import fs from 'fs/promises';
-import path from 'path';
+import { readdirSync } from 'node:fs';
+import fs from 'node:fs/promises';
+import path from 'node:path';
 
 import { HTTPSnippet, addTargetClient } from '@readme/httpsnippet';
 import readme from '@readme/oas-examples/3.0/json/readme.json';