diff --git a/packages/e2ee/.eslintrc.json b/packages/e2ee/.eslintrc.json
deleted file mode 100644
index f6789385..00000000
--- a/packages/e2ee/.eslintrc.json
+++ /dev/null
@@ -1,76 +0,0 @@
-{
-  "$schema": "https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/eslintrc.json",
-  "env": {
-    "browser": true,
-    "commonjs": true,
-    "es6": true
-  },
-  "extends": [
-    "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:@typescript-eslint/eslint-recommended",
-    "plugin:prettier/recommended",
-    "prettier"
-  ],
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "sourceType": "module"
-  },
-  "plugins": ["@typescript-eslint", "prettier"],
-  "globals": {
-    "SORA_JS_SDK_VERSION": true
-  },
-  "rules": {
-    "@typescript-eslint/ban-ts-comment": "off",
-    "@typescript-eslint/no-empty-function": "off",
-    "@typescript-eslint/no-unused-vars": [
-      "error",
-      {
-        "vars": "all",
-        "args": "all",
-        "argsIgnorePattern": "^_"
-      }
-    ],
-    "@typescript-eslint/naming-convention": [
-      "error",
-      {
-        "selector": "import",
-        "format": ["camelCase", "UPPER_CASE", "PascalCase"]
-      },
-      {
-        "selector": "default",
-        "format": ["camelCase"]
-      },
-      {
-        "selector": "class",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "interface",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "typeAlias",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "objectLiteralProperty",
-        "format": ["camelCase", "snake_case"]
-      },
-      {
-        "selector": "typeProperty",
-        "format": null
-      },
-      {
-        "selector": "variable",
-        "format": ["camelCase", "UPPER_CASE", "PascalCase"]
-      },
-      {
-        "selector": "parameter",
-        "format": ["camelCase"],
-        "leadingUnderscore": "allow"
-      }
-    ],
-    "curly": "error"
-  }
-}
diff --git a/packages/e2ee/src/sora_e2ee.ts b/packages/e2ee/src/sora_e2ee.ts
index c612abfb..818cf9ea 100644
--- a/packages/e2ee/src/sora_e2ee.ts
+++ b/packages/e2ee/src/sora_e2ee.ts
@@ -75,7 +75,7 @@ const WORKER_SCRIPT = '__WORKER_SCRIPT__'
 
 class SoraE2EE {
   worker: Worker | null
-  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  // biome-ignore lint/suspicious/noExplicitAny: <explanation>
   onWorkerDisconnect: (() => any) | null
 
   constructor() {
diff --git a/packages/e2ee/src/worker/e2ee.ts b/packages/e2ee/src/worker/e2ee.ts
index 947b5bfb..0f28b4ab 100644
--- a/packages/e2ee/src/worker/e2ee.ts
+++ b/packages/e2ee/src/worker/e2ee.ts
@@ -99,7 +99,11 @@ function removeDeriveKey(connectionId: string): void {
   remoteDeriveKeyMap.delete(connectionId)
 }
 
-function getLatestSelfDeriveKey(): { connectionId: string; keyId: number; deriveKey: CryptoKey } {
+function getLatestSelfDeriveKey(): {
+  connectionId: string
+  keyId: number
+  deriveKey: CryptoKey
+} {
   const deriveKey = selfDeriveKeyMap.get('latest')
   if (!deriveKey) {
     throw new Error('LATEST-SELF-DERIVEKEY-NOT_FOUND')
@@ -136,7 +140,6 @@ function silenceFrame(encodedFrame: Chunk): Chunk {
     const newData = new ArrayBuffer(60)
     const newUint8 = new Uint8Array(newData)
 
-    // prettier-ignore
     newUint8.set([
       0xb0, 0x05, 0x00, 0x9d, 0x01, 0x2a, 0xa0, 0x00, 0x5a, 0x00, 0x39, 0x03, 0x00, 0x00, 0x1c,
       0x22, 0x16, 0x16, 0x22, 0x66, 0x12, 0x20, 0x04, 0x90, 0x40, 0x00, 0xc5, 0x01, 0xe0, 0x7c,
diff --git a/packages/sdk/.eslintrc.json b/packages/sdk/.eslintrc.json
deleted file mode 100644
index 385329fb..00000000
--- a/packages/sdk/.eslintrc.json
+++ /dev/null
@@ -1,82 +0,0 @@
-{
-  "$schema": "https://raw.githubusercontent.com/SchemaStore/schemastore/master/src/schemas/json/eslintrc.json",
-  "env": {
-    "browser": true,
-    "commonjs": true,
-    "es6": true
-  },
-  "extends": [
-    "eslint:recommended",
-    "plugin:@typescript-eslint/recommended",
-    "plugin:@typescript-eslint/eslint-recommended",
-    "plugin:@typescript-eslint/recommended-requiring-type-checking",
-    "plugin:prettier/recommended",
-    "prettier"
-  ],
-  "parser": "@typescript-eslint/parser",
-  "parserOptions": {
-    "sourceType": "module",
-    "project": ["./tsconfig.json"]
-  },
-  "plugins": ["@typescript-eslint", "prettier"],
-  "globals": {
-    "SORA_JS_SDK_VERSION": true
-  },
-  "rules": {
-    "@typescript-eslint/ban-ts-comment": "off",
-    "@typescript-eslint/no-empty-function": "off",
-    "@typescript-eslint/no-unused-vars": [
-      "error",
-      {
-        "vars": "all",
-        "args": "all",
-        "argsIgnorePattern": "^_"
-      }
-    ],
-    "@typescript-eslint/naming-convention": [
-      "error",
-      {
-        "selector": "import",
-        "format": ["camelCase", "UPPER_CASE", "PascalCase"]
-      },
-      {
-        "selector": "default",
-        "format": ["camelCase"]
-      },
-      {
-        "selector": "class",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "interface",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "typeAlias",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "objectLiteralProperty",
-        "format": ["camelCase", "snake_case"]
-      },
-      {
-        "selector": "typeProperty",
-        "format": null
-      },
-      {
-        "selector": "parameter",
-        "format": ["camelCase"],
-        "leadingUnderscore": "allow"
-      },
-      {
-        "selector": "typeParameter",
-        "format": ["PascalCase"]
-      },
-      {
-        "selector": "variable",
-        "format": ["camelCase", "UPPER_CASE"]
-      }
-    ],
-    "curly": "error"
-  }
-}