diff --git a/index.js b/index.js
index ae78858..7adbe04 100644
--- a/index.js
+++ b/index.js
@@ -38,6 +38,9 @@ module.exports = function inspect_ (obj, opts, depth, seen) {
       }
       return String(obj);
     }
+    if (typeof obj === 'bigint') {
+      return String(obj) + 'n';
+    }
 
     var maxDepth = typeof opts.depth === 'undefined' ? 5 : opts.depth;
     if (typeof depth === 'undefined') depth = 0;
diff --git a/test/bigint.js b/test/bigint.js
new file mode 100644
index 0000000..2e3a144
--- /dev/null
+++ b/test/bigint.js
@@ -0,0 +1,10 @@
+var inspect = require('../');
+var test = require('tape');
+
+test('bigint', { skip: typeof BigInt === 'undefined' }, function (t) {
+  t.plan(3);
+
+  t.equal(inspect(BigInt(-256)), '-256n');
+  t.equal(inspect(BigInt(0)), '0n');
+  t.equal(inspect(BigInt(256)), '256n');
+});