diff --git a/HISTORY.md b/HISTORY.md
index 88da7a6..520f4d8 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,6 +1,7 @@
 unreleased
 ==================
 
+  * remove unnecessary devDependency `safe-buffer`
   * remove `unpipe` package and use native `unpipe()` method
   * remove unnecessary devDependency `readable-stream`
 
diff --git a/package.json b/package.json
index d7863d4..a6e179d 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,6 @@
     "eslint-plugin-standard": "4.1.0",
     "mocha": "10.0.0",
     "nyc": "15.1.0",
-    "safe-buffer": "5.2.1",
     "supertest": "6.2.4"
   },
   "files": [
diff --git a/test/test.js b/test/test.js
index 3fb931f..d200a7e 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,5 +1,3 @@
-
-var Buffer = require('safe-buffer').Buffer
 var finalhandler = require('..')
 var http = require('http')