diff --git a/README.md b/README.md
index 64feafb..85f81ec 100644
--- a/README.md
+++ b/README.md
@@ -142,8 +142,8 @@ If you want to read a parquet file remotely over http, use `asyncBufferFromUrl`
 
 ```typescript
 const url = 'https://s3.hyperparam.app/wiki_en.parquet'
-const requestInit = { headers: { Authorization: 'Bearer my_token' } }
-const byteLength = 415958713
+const requestInit = { headers: { Authorization: 'Bearer my_token' } } // auth header
+const byteLength = 415958713 // optional
 const file: AsyncBuffer = await asyncBufferFromUrl({ url, requestInit, byteLength })
 const data = await parquetReadObjects({ file })
 ```
diff --git a/package.json b/package.json
index cd0f534..fcebf72 100644
--- a/package.json
+++ b/package.json
@@ -38,6 +38,7 @@
       "import": "./src/*.js"
     }
   },
+  "sideEffects": false,
   "scripts": {
     "build:types": "tsc -p ./tsconfig.build.json",
     "coverage": "vitest run --coverage --coverage.include=src",
@@ -50,7 +51,7 @@
     "@types/node": "22.15.18",
     "@vitest/coverage-v8": "3.1.3",
     "eslint": "9.26.0",
-    "eslint-plugin-jsdoc": "50.6.11",
+    "eslint-plugin-jsdoc": "50.6.17",
     "hyparquet-compressors": "1.1.1",
     "typescript": "5.8.3",
     "typescript-eslint": "8.32.1",