diff --git a/package.json b/package.json
index 952630c93..3adfe61ba 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "dnslink-cloudflare": "^3.0.0"
   },
   "devDependencies": {
-    "@polkadot/dev": "^0.70.4",
+    "@polkadot/dev": "^0.71.1",
     "@types/node": "^18.14.6"
   },
   "resolutions": {
diff --git a/packages/phishing/src/addrcheck.spec.ts b/packages/phishing/src/addrcheck.spec.ts
index a8000c173..58bfe6557 100644
--- a/packages/phishing/src/addrcheck.spec.ts
+++ b/packages/phishing/src/addrcheck.spec.ts
@@ -7,7 +7,7 @@ import fs from 'node:fs';
 
 import { decodeAddress } from '@polkadot/util-crypto';
 
-import { fetchJson, fetchText } from './fetch';
+import { fetchJson, fetchText } from './fetch.js';
 
 const TICKS = '```';
 const TIMEOUT = 5000;
diff --git a/packages/phishing/src/bundle.ts b/packages/phishing/src/bundle.ts
index 082c6f383..86b845265 100644
--- a/packages/phishing/src/bundle.ts
+++ b/packages/phishing/src/bundle.ts
@@ -6,9 +6,9 @@ import type { AddressList, HostList } from './types';
 import { u8aEq } from '@polkadot/util';
 import { decodeAddress } from '@polkadot/util-crypto';
 
-import { fetchJson } from './fetch';
+import { fetchJson } from './fetch.js';
 
-export { packageInfo } from './packageInfo';
+export { packageInfo } from './packageInfo.js';
 
 interface Cache<T> {
   end: number;
diff --git a/packages/phishing/src/crosscheck.spec.ts b/packages/phishing/src/crosscheck.spec.ts
index a10e14cc5..628f48d5e 100644
--- a/packages/phishing/src/crosscheck.spec.ts
+++ b/packages/phishing/src/crosscheck.spec.ts
@@ -7,7 +7,7 @@ import { load as yamlParse } from 'js-yaml';
 import fs from 'node:fs';
 import process from 'node:process';
 
-import { fetchJson, fetchText } from './fetch';
+import { fetchJson, fetchText } from './fetch.js';
 
 interface CryptoScamEntry {
   addresses: Record<string, string[]>;
diff --git a/packages/phishing/src/detectPackage.ts b/packages/phishing/src/detectPackage.ts
index c8e93a192..3e996cd01 100644
--- a/packages/phishing/src/detectPackage.ts
+++ b/packages/phishing/src/detectPackage.ts
@@ -5,7 +5,7 @@
 
 import { detectPackage } from '@polkadot/util';
 
-import others from './detectOther';
-import { packageInfo } from './packageInfo';
+import others from './detectOther.js';
+import { packageInfo } from './packageInfo.js';
 
 detectPackage(packageInfo, null, others);
diff --git a/packages/phishing/src/index.spec.ts b/packages/phishing/src/index.spec.ts
index 8dfb192ff..fcb2db3c3 100644
--- a/packages/phishing/src/index.spec.ts
+++ b/packages/phishing/src/index.spec.ts
@@ -3,7 +3,7 @@
 
 /// <reference types="@polkadot/dev/node/test/node" />
 
-import { checkAddress, checkIfDenied } from '.';
+import { checkAddress, checkIfDenied } from './index.js';
 
 describe('checkIfDenied', (): void => {
   it('returns false when host is not listed', async (): Promise<void> => {
diff --git a/packages/phishing/src/index.ts b/packages/phishing/src/index.ts
index 77b3bc3c6..197597c03 100644
--- a/packages/phishing/src/index.ts
+++ b/packages/phishing/src/index.ts
@@ -1,6 +1,6 @@
 // Copyright 2020-2023 @polkadot/phishing authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-import './detectPackage';
+import './detectPackage.js';
 
-export * from './bundle';
+export * from './bundle.js';
diff --git a/packages/phishing/src/mod.ts b/packages/phishing/src/mod.ts
index 8466b7687..d43cd8813 100644
--- a/packages/phishing/src/mod.ts
+++ b/packages/phishing/src/mod.ts
@@ -1,4 +1,4 @@
 // Copyright 2020-2023 @polkadot/phishing authors & contributors
 // SPDX-License-Identifier: Apache-2.0
 
-export * from './index';
+export * from './index.js';
diff --git a/yarn.lock b/yarn.lock
index e7d523e3e..9dace4716 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -359,9 +359,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@polkadot/dev@npm:^0.70.4":
-  version: 0.70.4
-  resolution: "@polkadot/dev@npm:0.70.4"
+"@polkadot/dev@npm:^0.71.1":
+  version: 0.71.1
+  resolution: "@polkadot/dev@npm:0.71.1"
   dependencies:
     "@eslint/js": ^8.35.0
     "@rollup/plugin-alias": ^4.0.3
@@ -371,8 +371,8 @@ __metadata:
     "@rollup/plugin-json": ^6.0.0
     "@rollup/plugin-node-resolve": ^15.0.1
     "@rushstack/eslint-patch": ^1.2.0
-    "@typescript-eslint/eslint-plugin": ^5.54.0
-    "@typescript-eslint/parser": ^5.54.0
+    "@typescript-eslint/eslint-plugin": ^5.54.1
+    "@typescript-eslint/parser": ^5.54.1
     eslint: ^8.35.0
     eslint-config-standard: ^17.0.0
     eslint-import-resolver-node: ^0.3.7
@@ -426,7 +426,7 @@ __metadata:
     polkadot-exec-rollup: scripts/polkadot-exec-rollup.mjs
     polkadot-exec-tsc: scripts/polkadot-exec-tsc.mjs
     polkadot-exec-webpack: scripts/polkadot-exec-webpack.mjs
-  checksum: 446bc7a0637a91d30829d5fccb2b6c74d9f54bc7e67290c11cfca56a0f528a33b5ee1b066ed9bde6b669d866c89e3895ff7a44b79210bb549dd406afccc0ca9d
+  checksum: 18505f604cd99a6fa858fe0dd6f9f09f6ae46bc3428616dd8df6f4533b4854de1c517f1c0ede5f7c11a881ffea2175ffd48c8526ea16f7da3320595d0ae67cf8
   languageName: node
   linkType: hard
 
@@ -1074,13 +1074,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/eslint-plugin@npm:^5.54.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/eslint-plugin@npm:5.54.0"
+"@typescript-eslint/eslint-plugin@npm:^5.54.1":
+  version: 5.54.1
+  resolution: "@typescript-eslint/eslint-plugin@npm:5.54.1"
   dependencies:
-    "@typescript-eslint/scope-manager": 5.54.0
-    "@typescript-eslint/type-utils": 5.54.0
-    "@typescript-eslint/utils": 5.54.0
+    "@typescript-eslint/scope-manager": 5.54.1
+    "@typescript-eslint/type-utils": 5.54.1
+    "@typescript-eslint/utils": 5.54.1
     debug: ^4.3.4
     grapheme-splitter: ^1.0.4
     ignore: ^5.2.0
@@ -1094,7 +1094,7 @@ __metadata:
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 4fdb520b8e0f6b9eb878206ddfa4212522f170d1507d7aba8a975159a198efa37af6d2d17982dd560317452d0748f2e2da5dd7347b172bc4446d1c5562ce2e94
+  checksum: 76476c08ca0142a9bf6e2381f5cd1c037d86fbafa9c0dded4a97bd3b23b5962dd2c3943bade11b21d674195674f0e36dbf80faa15a1906f5a2ca1f699baf1dd5
   languageName: node
   linkType: hard
 
@@ -1109,20 +1109,20 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/parser@npm:^5.54.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/parser@npm:5.54.0"
+"@typescript-eslint/parser@npm:^5.54.1":
+  version: 5.54.1
+  resolution: "@typescript-eslint/parser@npm:5.54.1"
   dependencies:
-    "@typescript-eslint/scope-manager": 5.54.0
-    "@typescript-eslint/types": 5.54.0
-    "@typescript-eslint/typescript-estree": 5.54.0
+    "@typescript-eslint/scope-manager": 5.54.1
+    "@typescript-eslint/types": 5.54.1
+    "@typescript-eslint/typescript-estree": 5.54.1
     debug: ^4.3.4
   peerDependencies:
     eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 368d6dd85be42c3f518f0ddeed23ecd1d3c9484a77ae291ee4e08e2703ed379bed613bde014cd8ab2a3e06e85dd8aef201112ae5e3d2a07deba29ae80bb1fe06
+  checksum: f466513d306ca926b97c2cec1eebaf2cd15d45bd5633a4358f23ba9a4de1b0ec4630b1c20abc395943934ed1d2ef65f545fd6737c317a7abe579612101e8a83f
   languageName: node
   linkType: hard
 
@@ -1136,22 +1136,22 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/scope-manager@npm:5.54.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/scope-manager@npm:5.54.0"
+"@typescript-eslint/scope-manager@npm:5.54.1":
+  version: 5.54.1
+  resolution: "@typescript-eslint/scope-manager@npm:5.54.1"
   dependencies:
-    "@typescript-eslint/types": 5.54.0
-    "@typescript-eslint/visitor-keys": 5.54.0
-  checksum: e50f12396de0ddb94aab119bdd5f4769b80dd2c273e137fd25e5811e25114d7a3d3668cdb3c454aca9537e940744881d62a1fed2ec86f07f60533dc7382ae15c
+    "@typescript-eslint/types": 5.54.1
+    "@typescript-eslint/visitor-keys": 5.54.1
+  checksum: 9add24cf3a7852634ad0680a827646860ac4698a6ac8aae31e8b781e29f59e84b51f0cdaacffd0747811012647f01b51969d988da9b302ead374ceebffbe204b
   languageName: node
   linkType: hard
 
-"@typescript-eslint/type-utils@npm:5.54.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/type-utils@npm:5.54.0"
+"@typescript-eslint/type-utils@npm:5.54.1":
+  version: 5.54.1
+  resolution: "@typescript-eslint/type-utils@npm:5.54.1"
   dependencies:
-    "@typescript-eslint/typescript-estree": 5.54.0
-    "@typescript-eslint/utils": 5.54.0
+    "@typescript-eslint/typescript-estree": 5.54.1
+    "@typescript-eslint/utils": 5.54.1
     debug: ^4.3.4
     tsutils: ^3.21.0
   peerDependencies:
@@ -1159,7 +1159,7 @@ __metadata:
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 9cb5b52c7277bdf74b9ea3282fc40f41fda90ea4b1d33039044476e43cf05a766b1294e7d45f429594f2776828f7d17729cfa4ea027315f3df883e748ba57514
+  checksum: 0073838b782b7f4619775be124ca6643fec43a2d56043eaf3ceb100960a5193f14ac747b28ce17a5c9ac643fdee8abda82a7d905c81521358de7b27a2dcbc9af
   languageName: node
   linkType: hard
 
@@ -1177,10 +1177,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/types@npm:5.54.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/types@npm:5.54.0"
-  checksum: 0f66b1b93078f3afea6dfcd3d4e2f0abea4f60cd0c613c2cf13f85098e5bf786185484c9846ed80b6c4272de2c31a70c5a8aacb91314cf1b6da7dcb8855cb7ac
+"@typescript-eslint/types@npm:5.54.1":
+  version: 5.54.1
+  resolution: "@typescript-eslint/types@npm:5.54.1"
+  checksum: 84a8f725cfa10646af389659e09c510c38d82c65960c7b613f844a264acc0e197471cba03f3e8f4b6411bc35dca28922c8352a7bd44621411c73fd6dd4096da2
   languageName: node
   linkType: hard
 
@@ -1202,12 +1202,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/typescript-estree@npm:5.54.0, @typescript-eslint/typescript-estree@npm:^5.13.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/typescript-estree@npm:5.54.0"
+"@typescript-eslint/typescript-estree@npm:5.54.1, @typescript-eslint/typescript-estree@npm:^5.13.0":
+  version: 5.54.1
+  resolution: "@typescript-eslint/typescript-estree@npm:5.54.1"
   dependencies:
-    "@typescript-eslint/types": 5.54.0
-    "@typescript-eslint/visitor-keys": 5.54.0
+    "@typescript-eslint/types": 5.54.1
+    "@typescript-eslint/visitor-keys": 5.54.1
     debug: ^4.3.4
     globby: ^11.1.0
     is-glob: ^4.0.3
@@ -1216,7 +1216,7 @@ __metadata:
   peerDependenciesMeta:
     typescript:
       optional: true
-  checksum: 377c75c34c4f95b7ab6218c1d96a6db3ea6ed6727711b6a09354582fe0157861dc1b6fb9e3f7113cd09741f713735d59d5ab5845457f5733a4ebad7470bf600a
+  checksum: ea42bdb4832fa96fa1121237c9b664ac4506e2836646651e08a8542c8601d78af6c288779707f893ca4c884221829bb7d7b4b43c4a9c3ed959519266d03a139b
   languageName: node
   linkType: hard
 
@@ -1256,21 +1256,21 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/utils@npm:5.54.0, @typescript-eslint/utils@npm:^5.10.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/utils@npm:5.54.0"
+"@typescript-eslint/utils@npm:5.54.1, @typescript-eslint/utils@npm:^5.10.0":
+  version: 5.54.1
+  resolution: "@typescript-eslint/utils@npm:5.54.1"
   dependencies:
     "@types/json-schema": ^7.0.9
     "@types/semver": ^7.3.12
-    "@typescript-eslint/scope-manager": 5.54.0
-    "@typescript-eslint/types": 5.54.0
-    "@typescript-eslint/typescript-estree": 5.54.0
+    "@typescript-eslint/scope-manager": 5.54.1
+    "@typescript-eslint/types": 5.54.1
+    "@typescript-eslint/typescript-estree": 5.54.1
     eslint-scope: ^5.1.1
     eslint-utils: ^3.0.0
     semver: ^7.3.7
   peerDependencies:
     eslint: ^6.0.0 || ^7.0.0 || ^8.0.0
-  checksum: b8f344fc2961c7af530b93e53d5a17b5084cdf550b381082e3fb7f349ef16e718d9eebde1b9fc2d8fc4ecf8d60d334b004359977247554265c1afc87323bed37
+  checksum: 8f428ea4d338ce85d55fd0c9ae2b217b323f29f51b7c9f8077fef7001ca21d28b032c5e5165b67ae6057aef69edb0e7a164c3c483703be6f3e4e574248bbc399
   languageName: node
   linkType: hard
 
@@ -1294,13 +1294,13 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@typescript-eslint/visitor-keys@npm:5.54.0":
-  version: 5.54.0
-  resolution: "@typescript-eslint/visitor-keys@npm:5.54.0"
+"@typescript-eslint/visitor-keys@npm:5.54.1":
+  version: 5.54.1
+  resolution: "@typescript-eslint/visitor-keys@npm:5.54.1"
   dependencies:
-    "@typescript-eslint/types": 5.54.0
+    "@typescript-eslint/types": 5.54.1
     eslint-visitor-keys: ^3.3.0
-  checksum: 17fc323c09e6272b603cdaec30a99916600fbbb737e1fbc8c1727a487753b4363cea112277fa43e0562bff34bdd1de9ad73ff9433118b1fd469b112fad0313ca
+  checksum: 3a691abd2a43b86a0c41526d14a2afcc93a2e0512b5f8b9ec43f6029c493870808036eae5ee4fc655d26e1999017c4a4dffb241f47c36c2a1238ec9fbd08719c
   languageName: node
   linkType: hard
 
@@ -7611,7 +7611,7 @@ fsevents@~2.3.2:
   resolution: "root-workspace-0b6124@workspace:."
   dependencies:
     "@pinata/sdk": ^1.2.1
-    "@polkadot/dev": ^0.70.4
+    "@polkadot/dev": ^0.71.1
     "@types/node": ^18.14.6
     dnslink-cloudflare: ^3.0.0
   languageName: unknown