diff --git a/package.json b/package.json
index 49c82d5..8ea1a36 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
 		"test:corejs": "node test/corejs",
 		"coverage": "covert test/native test/why",
 		"coverage-quiet": "covert test/native.js --quiet",
-		"lint": "eslint *.js test/*.js"
+		"lint": "eslint ."
 	},
 	"repository": {
 		"type": "git",
@@ -60,19 +60,19 @@
 		"which-collection": "^1.0.1"
 	},
 	"devDependencies": {
-		"@ljharb/eslint-config": "^15.0.2",
+		"@ljharb/eslint-config": "^16.0.0",
 		"auto-changelog": "^1.16.2",
 		"core-js": "^2.6.5 || ^3",
 		"covert": "^1.1.1",
 		"es6-shim": "^0.35.5",
-		"eslint": "^6.7.1",
+		"eslint": "^6.8.0",
 		"foreach": "^2.0.5",
 		"has-bigints": "^1.0.0",
 		"has-symbols": "^1.0.1",
-		"make-arrow-function": "^1.1.0",
-		"make-generator-function": "^1.1.0",
+		"make-arrow-function": "~1.1.0",
+		"make-generator-function": "^2.0.0",
 		"safe-publish-latest": "^1.1.4",
-		"tape": "^4.11.0"
+		"tape": "^5.0.0-next.4"
 	},
 	"testling": {
 		"files": "test/native.js",
diff --git a/test/native.js b/test/native.js
index cb21306..a5d17d0 100644
--- a/test/native.js
+++ b/test/native.js
@@ -5,8 +5,8 @@ var isEqual = require('../');
 var hasSymbols = require('has-symbols')();
 var hasSymbolShams = require('has-symbols/shams')();
 var hasBigInts = require('has-bigints')();
-var genFn = require('make-generator-function');
-var hasGeneratorSupport = typeof genFn === 'function';
+var generators = require('make-generator-function')();
+var hasGeneratorSupport = generators.length > 0;
 var arrowFunctions = require('make-arrow-function').list();
 var hasArrowFunctionSupport = arrowFunctions.length > 0;
 var objectEntries = require('object.entries');
@@ -17,7 +17,11 @@ var symbolIterator = (hasSymbols || hasSymbolShams) && Symbol.iterator;
 
 var copyFunction = function (fn) {
 	/* eslint-disable no-new-func */
-	return Function('return ' + String(fn))();
+	try {
+		return Function('return ' + String(fn))();
+	} catch (e) {
+		return Function('return {' + String(fn) + '}["' + fn.name + '"];')();
+	}
 };
 
 test('primitives', function (t) {
@@ -228,8 +232,7 @@ test('functions', function (t) {
 		var genNoSpaces = Function('return function*(){};')();
 		st.notOk(isEqual(fnNoSpace, genNoSpaces), 'generator and fn that are otherwise identical are not equal');
 
-		var generators = [genFnStar, genFnSpaceStar, genNoSpaces];
-		forEach(generators, function (generator) {
+		forEach(generators.concat(genFnStar, genFnSpaceStar, genNoSpaces), function (generator) {
 			st.ok(isEqual(generator, generator), generator + ' is equal to itself');
 			st.ok(isEqual(generator, copyFunction(generator)), generator + ' is equal to copyFunction(generator)');
 		});
@@ -372,7 +375,7 @@ test('iterables', function (t) {
 				ab.add('a');
 				ab.add('c');
 			}
-			st.notOk(isEqual(ab, ac), 'Sets initially populated with different strings are not equal');
+			sst.notOk(isEqual(ab, ac), 'Sets initially populated with different strings are not equal');
 			sst.end();
 		});
 
diff --git a/test/why.js b/test/why.js
index 3c11541..d62a480 100644
--- a/test/why.js
+++ b/test/why.js
@@ -7,8 +7,8 @@ var isEqualWhy = require('../why');
 var hasSymbols = require('has-symbols')();
 var hasSymbolShams = require('has-symbols/shams')();
 var hasBigInts = require('has-bigints')();
-var genFn = require('make-generator-function');
-var hasGeneratorSupport = typeof genFn === 'function';
+var generators = require('make-generator-function')();
+var hasGeneratorSupport = generators.length > 0;
 var arrowFunctions = require('make-arrow-function').list();
 var hasArrowFunctionSupport = arrowFunctions.length > 0;
 var objectEntries = require('object.entries');
@@ -19,7 +19,11 @@ var symbolIterator = (hasSymbols || hasSymbolShams) && Symbol.iterator;
 
 var copyFunction = function (fn) {
 	/* eslint-disable no-new-func */
-	return Function('return ' + String(fn))();
+	try {
+		return Function('return ' + String(fn))();
+	} catch (e) {
+		return Function('return {' + String(fn) + '}["' + fn.name + '"];')();
+	}
 };
 
 test('primitives', function (t) {
@@ -365,8 +369,7 @@ test('functions', function (t) {
 		reasonsMap[actual] = true;
 		st.deepEqual(objectEntries(reasonsMap), reasons, 'generator and fn that are otherwise identical are not equal');
 
-		var generators = [genFnStar, genFnSpaceStar, genNoSpaces];
-		forEach(generators, function (generator) {
+		forEach(generators.concat(genFnStar, genFnSpaceStar, genNoSpaces), function (generator) {
 			st.equal('', isEqualWhy(generator, generator), generator + ' is equal to itself');
 			st.equal('', isEqualWhy(generator, copyFunction(generator)), generator + ' is equal to copyFunction(generator)');
 		});
@@ -571,7 +574,7 @@ test('iterables', function (t) {
 				ac.add('a');
 				ac.add('c');
 			}
-			st.equal(
+			sst.equal(
 				isEqualWhy(ab, ac),
 				'iteration results are not equal: value at key "value" differs: string values are different: "b" !== "c"',
 				'Sets initially populated with different strings are not equal'