diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index bf58bf0..ccbcc0a 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Setup node
         uses: actions/setup-node@v1
         with:
-          node-version: 6
+          node-version: 10
       - name: Install dev dependencies
         run: |
           npm install
diff --git a/.github/workflows/test-macos.yml b/.github/workflows/test-macos.yml
index 618a4b8..1745400 100644
--- a/.github/workflows/test-macos.yml
+++ b/.github/workflows/test-macos.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [14, 12, 10, 8, 6]
+        node: [14, 12, 10]
     steps:
       - name: Setup repo
         uses: actions/checkout@v2
diff --git a/.github/workflows/test-ubuntu.yml b/.github/workflows/test-ubuntu.yml
index 7f685f4..add7ebc 100644
--- a/.github/workflows/test-ubuntu.yml
+++ b/.github/workflows/test-ubuntu.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [14, 12, 10, 8, 6]
+        node: [14, 12, 10]
     steps:
       - name: Setup repo
         uses: actions/checkout@v2
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index 0d48853..6879b3f 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node: [14, 12, 10, 8, 6]
+        node: [14, 12, 10]
     steps:
       - name: Setup repo
         uses: actions/checkout@v2
diff --git a/package.json b/package.json
index 85adbee..f7a2c20 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "index.js"
   ],
   "engines": {
-    "node": ">=6"
+    "node": ">=10"
   },
   "scripts": {
     "lint": "xo",
@@ -60,9 +60,9 @@
   },
   "devDependencies": {
     "@turf/helpers": "^6.1.4",
-    "ava": "^1.4.1",
-    "nyc": "^14.1.1",
-    "xo": "~0.24.0"
+    "ava": "^3.9.0",
+    "nyc": "^15.1.0",
+    "xo": "~0.27.2"
   },
   "ava": {
     "verbose": true
diff --git a/test/line-in-line.js b/test/line-in-line.js
index 725bffe..3525664 100644
--- a/test/line-in-line.js
+++ b/test/line-in-line.js
@@ -1,8 +1,8 @@
-import test from 'ava';
+const test = require('ava');
 
-import {lineString, featureCollection} from '@turf/helpers';
+const {lineString, featureCollection} = require('@turf/helpers');
 
-import M from '..';
+const M = require('..');
 
 test('exports a constructor.', t => {
   t.is(typeof M, 'function');
diff --git a/test/line-in-polygon.js b/test/line-in-polygon.js
index 5e11dfe..b2c8024 100644
--- a/test/line-in-polygon.js
+++ b/test/line-in-polygon.js
@@ -1,8 +1,8 @@
-import test from 'ava';
+const test = require('ava');
 
-import {lineString, polygon, featureCollection} from '@turf/helpers';
+const {lineString, polygon, featureCollection} = require('@turf/helpers');
 
-import M from '..';
+const M = require('..');
 
 test('exports a constructor.', t => {
   t.is(typeof M, 'function');
diff --git a/test/point-in-line.js b/test/point-in-line.js
index ca8246a..028dc80 100644
--- a/test/point-in-line.js
+++ b/test/point-in-line.js
@@ -1,8 +1,8 @@
-import test from 'ava';
+const test = require('ava');
 
-import {point, lineString, featureCollection} from '@turf/helpers';
+const {point, lineString, featureCollection} = require('@turf/helpers');
 
-import M from '..';
+const M = require('..');
 
 test('exports a constructor.', t => {
   t.is(typeof M, 'function');
diff --git a/test/point-in-point.js b/test/point-in-point.js
index 37716b1..8f945d7 100644
--- a/test/point-in-point.js
+++ b/test/point-in-point.js
@@ -1,8 +1,8 @@
-import test from 'ava';
+const test = require('ava');
 
-import {point, featureCollection} from '@turf/helpers';
+const {point, featureCollection} = require('@turf/helpers');
 
-import M from '..';
+const M = require('..');
 
 test('exports a constructor.', t => {
   t.is(typeof M, 'function');
diff --git a/test/point-in-polygon.js b/test/point-in-polygon.js
index 03ef0eb..5f05307 100644
--- a/test/point-in-polygon.js
+++ b/test/point-in-polygon.js
@@ -1,8 +1,8 @@
-import test from 'ava';
+const test = require('ava');
 
-import {point, polygon, featureCollection} from '@turf/helpers';
+const {point, polygon, featureCollection} = require('@turf/helpers');
 
-import M from '..';
+const M = require('..');
 
 test('exports a constructor.', t => {
   t.is(typeof M, 'function');
diff --git a/test/polygon-in-polygon.js b/test/polygon-in-polygon.js
index 381d359..455e937 100644
--- a/test/polygon-in-polygon.js
+++ b/test/polygon-in-polygon.js
@@ -1,8 +1,8 @@
-import test from 'ava';
+const test = require('ava');
 
-import {polygon, featureCollection} from '@turf/helpers';
+const {polygon, featureCollection} = require('@turf/helpers');
 
-import M from '..';
+const M = require('..');
 
 test('exports a constructor.', t => {
   t.is(typeof M, 'function');