diff --git a/.gitignore b/.gitignore
index 95893b6..9c94371 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 node_modules
 .DS_Store
+*-lock.*
 *.lock
 *.log
 dist
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 88a8dbe..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-language: node_js
-node_js:
-  - 6
diff --git a/package.json b/package.json
index 30a5139..422de86 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
   "author": {
     "name": "Luke Edwards",
     "email": "luke.edwards05@gmail.com",
-    "url": "lukeed.com"
+    "url": "https://lukeed.com"
   },
   "engines": {
     "node": ">=4"
@@ -20,7 +20,7 @@
   "scripts": {
     "build": "bundt",
     "pretest": "npm run build",
-    "test": "tape test/*.js | tap-spec"
+    "test": "uvu -r esm test"
   },
   "files": [
     "*.d.ts",
@@ -36,8 +36,8 @@
     "set"
   ],
   "devDependencies": {
-    "bundt": "^0.3.0",
-    "tap-spec": "^4.1.1",
-    "tape": "^4.8.0"
+    "bundt": "1.1.2",
+    "esm": "3.2.25",
+    "uvu": "0.5.1"
   }
 }
diff --git a/test/index.js b/test/index.js
index 0bd9a78..5cf9339 100644
--- a/test/index.js
+++ b/test/index.js
@@ -1,72 +1,74 @@
-const test = require('tape');
-const fn = require('../dist/dset');
+// @ts-check
+import { test } from 'uvu';
+import * as assert from 'uvu/assert';
+import dset from '../dist/dset';
 
-test('dset', t => {
-	t.is(typeof fn, 'function', 'exports a function');
+test('dset', () => {
+	assert.type(dset, 'function', 'exports a function');
 
 	let foo = { a:1, b:2 };
-	let out = fn(foo, 'c', 3); // add c
-	t.is(out, undefined, 'does not return output');
-	t.same(foo, { a:1, b:2, c:3 }, 'mutates; adds simple key:val');
+	let out = dset(foo, 'c', 3); // add c
+	assert.is(out, undefined, 'does not return output');
+	assert.equal(foo, { a:1, b:2, c:3 }, 'mutates; adds simple key:val');
 
 	foo = {};
-	fn(foo, 'a.b.c', 999); // add deep
-	t.same(foo, { a:{ b:{ c:999 } } }, 'mutates; adds deeply nested key:val');
+	dset(foo, 'a.b.c', 999); // add deep
+	assert.equal(foo, { a:{ b:{ c:999 } } }, 'mutates; adds deeply nested key:val');
 
 	foo = {};
-	fn(foo, ['a', 'b', 'c'], 123); // change via array
-	t.same(foo, { a:{ b:{ c:123 } } }, 'mutates; changes the value via array-type keys');
+	dset(foo, ['a', 'b', 'c'], 123); // change via array
+	assert.equal(foo, { a:{ b:{ c:123 } } }, 'mutates; changes the value via array-type keys');
 
 	foo = { a:1 };
-	fn(foo, 'e.0.0', 2); // create arrays instead of objects
-	t.is(foo.e[0][0], 2, 'mutates; can create arrays when key is numeric');
-	t.same(foo, { a: 1, e:[[2]] });
-	t.true(Array.isArray(foo.e));
+	dset(foo, 'e.0.0', 2); // create arrays instead of objects
+	assert.is(foo.e[0][0], 2, 'mutates; can create arrays when key is numeric');
+	assert.equal(foo, { a: 1, e:[[2]] });
+	assert.instance(foo.e, Array);
 
 	foo = { a:{ b:{ c:123 } } };
-	fn(foo, 'a.b.x.y', 456); // preserve existing structure
-	t.same(foo, { a:{ b:{ c:123, x:{ y:456 } }} }, 'mutates; writes into/preserves existing object');
+	dset(foo, 'a.b.x.y', 456); // preserve existing structure
+	assert.equal(foo, { a:{ b:{ c:123, x:{ y:456 } }} }, 'mutates; writes into/preserves existing object');
 
 	foo = { a: { b:123 } };
-	fn(foo, 'a.b.c', 'hello'); // preserve non-object value, won't alter
-	t.is(foo.a.b, 123, 'refuses to convert existing non-object value into object');
-	t.same(foo, { a: { b:123 }});
+	dset(foo, 'a.b.c', 'hello'); // preserve non-object value, won't alter
+	assert.is(foo.a.b, 123, 'refuses to convert existing non-object value into object');
+	assert.equal(foo, { a: { b:123 }});
 
 	foo = { a:{ b:{ c:123, d:{ e:5 } } } };
-	fn(foo, 'a.b.d.z', [1,2,3,4]); // preserve object tree, with array value
-	t.same(foo.a.b.d, { e:5, z:[1,2,3,4] }, 'mutates; writes into existing object w/ array value');
+	dset(foo, 'a.b.d.z', [1,2,3,4]); // preserve object tree, with array value
+	assert.equal(foo.a.b.d, { e:5, z:[1,2,3,4] }, 'mutates; writes into existing object w/ array value');
 
 	foo = { b:123 };
-	t.doesNotThrow(_ => fn(foo, 'b.c.d.e', 123), undefined, 'silently preserves existing non-null value');
-	t.is(foo.b, 123, 'preserves existing value');
+	assert.not.throws(_ => dset(foo, 'b.c.d.e', 123), 'silently preserves existing non-null value');
+	assert.is(foo.b, 123, 'preserves existing value');
 
 	foo = { b:0 };
-	t.doesNotThrow(_ => fn(foo, 'b.a.s.d', 123), undefined, 'silently preserves `0` as existing non-null value');
-	t.same(foo, { b:0 }, 'preserves existing object values');
+	assert.not.throws(_ => dset(foo, 'b.a.s.d', 123), 'silently preserves `0` as existing non-null value');
+	assert.equal(foo, { b:0 }, 'preserves existing object values');
 
 	foo = {};
-	fn(foo, ['x', 'y', 'z'], 123);
-	t.same(foo, { x:{ y:{ z:123 } } });
+	dset(foo, ['x', 'y', 'z'], 123);
+	assert.equal(foo, { x:{ y:{ z:123 } } });
 
 	foo = {};
-	fn(foo, ['x', '0', 'z'], 123);
-	t.same(foo, { x:[{ z:123 }] });
-	t.true(Array.isArray(foo.x));
+	dset(foo, ['x', '0', 'z'], 123);
+	assert.equal(foo, { x:[{ z:123 }] });
+	assert.instance(foo.x, Array);
 
 	foo = {};
-	fn(foo, ['x', '1', 'z'], 123);
-	t.same(foo, { x:[,{ z:123 }] });
-	t.true(Array.isArray(foo.x));
+	dset(foo, ['x', '1', 'z'], 123);
+	assert.equal(foo, { x:[,{ z:123 }] });
+	assert.instance(foo.x, Array);
 
 	foo = {};
-	fn(foo, ['x', '10.0', 'z'], 123);
-	t.same(foo, { x:{ '10.0':{ z:123 } } });
-	t.false(Array.isArray(foo.x));
+	dset(foo, ['x', '10.0', 'z'], 123);
+	assert.equal(foo, { x:{ '10.0':{ z:123 } } });
+	assert.not.instance(foo.x, Array);
 
 	foo = {};
-	fn(foo, ['x', '10.2', 'z'], 123);
-	t.same(foo, { x:{ '10.2':{ z:123 } } });
-	t.false(Array.isArray(foo.x));
-
-	t.end();
+	dset(foo, ['x', '10.2', 'z'], 123);
+	assert.equal(foo, { x:{ '10.2':{ z:123 } } });
+	assert.not.instance(foo.x, Array);
 });
+
+test.run();