diff --git a/test/function/assignment-patterns/_config.js b/test/function/assignment-patterns/_config.js
index d4afdc3..e21b4a0 100644
--- a/test/function/assignment-patterns/_config.js
+++ b/test/function/assignment-patterns/_config.js
@@ -1,4 +1,4 @@
 module.exports = {
 	description: 'allows reassigments to default parameters that shadow imports',
-	babel: true
+	buble: true
 };
diff --git a/test/function/class-methods-not-renamed/_config.js b/test/function/class-methods-not-renamed/_config.js
index 0b31fd0..99bfc6e 100644
--- a/test/function/class-methods-not-renamed/_config.js
+++ b/test/function/class-methods-not-renamed/_config.js
@@ -3,5 +3,5 @@ module.exports = {
 	options: {
 		external: [ 'path' ]
 	},
-	babel: true
+	buble: true
 };
diff --git a/test/function/cycles-pathological/_config.js b/test/function/cycles-pathological/_config.js
index 4e939af..8d44d9a 100644
--- a/test/function/cycles-pathological/_config.js
+++ b/test/function/cycles-pathological/_config.js
@@ -4,7 +4,7 @@ var warned;
 
 module.exports = {
 	description: 'resolves pathological cyclical dependencies gracefully',
-	babel: true,
+	buble: true,
 	options: {
 		onwarn: function ( message ) {
 			assert.ok( /Module .+B\.js may be unable to evaluate without .+A\.js, but is included first due to a cyclical dependency. Consider swapping the import statements in .+main\.js to ensure correct ordering/.test( message ) );
diff --git a/test/function/deconstructed-exported-vars/_config.js b/test/function/deconstructed-exported-vars/_config.js
index 0451342..a210a0f 100644
--- a/test/function/deconstructed-exported-vars/_config.js
+++ b/test/function/deconstructed-exported-vars/_config.js
@@ -2,7 +2,7 @@ var assert = require( 'assert' );
 
 module.exports = {
 	description: 'allows destructuring in exported variable declarations, synthetic or otherwise',
-	babel: true,
+	buble: true,
 	exports: function ( exports ) {
 		assert.equal( exports.a, 1 );
 		assert.equal( exports.d, 4 );
diff --git a/test/function/export-destruction/_config.js b/test/function/export-destruction/_config.js
index 263c8d1..1d77b9b 100644
--- a/test/function/export-destruction/_config.js
+++ b/test/function/export-destruction/_config.js
@@ -2,7 +2,7 @@ var assert = require( 'assert' );
 
 module.exports = {
 	description: 'handle destruction patterns in export declarations',
-	babel: true,
+	buble: true,
 
 	exports: function ( exports ) {
 		assert.deepEqual( Object.keys( exports ), [ 'baz', 'quux' ] );
diff --git a/test/function/import-default-class/_config.js b/test/function/import-default-class/_config.js
index 5e59ef1..e3201e1 100644
--- a/test/function/import-default-class/_config.js
+++ b/test/function/import-default-class/_config.js
@@ -1,6 +1,6 @@
 module.exports = {
 	description: 'imports a default class',
-	babel: true
+	buble: true
 };
 
 // test copied from https://github.com/esnext/es6-module-transpiler/tree/master/test/examples/export-default-class
diff --git a/test/function/import-named-class/_config.js b/test/function/import-named-class/_config.js
index e7749d0..02a6302 100644
--- a/test/function/import-named-class/_config.js
+++ b/test/function/import-named-class/_config.js
@@ -1,6 +1,6 @@
 module.exports = {
 	description: 'imports a named class',
-	babel: true
+	buble: true
 };
 
 // test copied from https://github.com/esnext/es6-module-transpiler/tree/master/test/examples/export-named-class
diff --git a/test/function/import-nameless-class-expression/_config.js b/test/function/import-nameless-class-expression/_config.js
index 562c561..e6cacef 100644
--- a/test/function/import-nameless-class-expression/_config.js
+++ b/test/function/import-nameless-class-expression/_config.js
@@ -1,6 +1,6 @@
 module.exports = {
 	description: 'imports a nameless class expression',
-	babel: true
+	buble: true
 };
 
 // test copied from https://github.com/esnext/es6-module-transpiler/tree/master/test/examples/export-class-expression
diff --git a/test/function/object-destructuring-renaming/_config.js b/test/function/object-destructuring-renaming/_config.js
index 4a1b8b6..cae5239 100644
--- a/test/function/object-destructuring-renaming/_config.js
+++ b/test/function/object-destructuring-renaming/_config.js
@@ -4,7 +4,7 @@ module.exports = {
 	description: 'renaming destructured object properties should request the correct property (#527)',
 
 	// we must transpile the object destructuring to test it
-	babel: true,
+	buble: true,
 
 	exports: function ( exports ) {
 		assert.equal( exports.env, process.env );
diff --git a/test/function/top-level-arrow-function/_config.js b/test/function/top-level-arrow-function/_config.js
index 6ce4fd3..5bdf0bc 100644
--- a/test/function/top-level-arrow-function/_config.js
+++ b/test/function/top-level-arrow-function/_config.js
@@ -1,4 +1,4 @@
 module.exports = {
 	description: 'handles naked return value from top-level arrow function expression (#403)',
-	babel: true
+	buble: true
 };
diff --git a/test/sourcemaps/transforms/_config.js b/test/sourcemaps/transforms/_config.js
index b76a885..77b9354 100644
--- a/test/sourcemaps/transforms/_config.js
+++ b/test/sourcemaps/transforms/_config.js
@@ -1,4 +1,4 @@
-var babel = require( 'babel-core' );
+var buble = require( 'buble' );
 var MagicString = require( 'magic-string' );
 var assert = require( 'assert' );
 var getLocation = require( '../../utils/getLocation' );
@@ -10,9 +10,8 @@ module.exports = {
 		plugins: [
 			{
 				transform: function ( source, id ) {
-					return babel.transform( source, {
-						blacklist: [ 'es6.modules' ],
-						sourceMap: true
+					return buble.transform( source, {
+						transforms: { modules: false }
 					});
 				}
 			},
diff --git a/test/test.js b/test/test.js
index 639104e..df63971 100644
--- a/test/test.js
+++ b/test/test.js
@@ -6,7 +6,7 @@ var os = require( 'os' );
 var sander = require( 'sander' );
 var assert = require( 'assert' );
 var exec = require( 'child_process' ).exec;
-var babel = require( 'babel-core' );
+var buble = require( 'buble' );
 var rollup = require( '../dist/rollup' );
 
 var FUNCTION = path.resolve( __dirname, 'function' );
@@ -171,15 +171,12 @@ describe( 'rollup', function () {
 						if ( unintendedError ) throw unintendedError;
 						if ( config.error || config.generateError ) return;
 
-						var code;
+						var code = result.code;
 
-						if ( config.babel ) {
-							code = babel.transform( result.code, {
-								blacklist: [ 'es6.modules' ],
-								loose: [ 'es6.classes' ]
+						if ( config.buble ) {
+							code = buble.transform( code, {
+								transforms: { modules: false }
 							}).code;
-						} else {
-							code = result.code;
 						}
 
 						if ( config.code ) config.code( code );
@@ -372,10 +369,9 @@ describe( 'rollup', function () {
 
 						if ( config.execute ) {
 							try {
-								if ( config.babel ) {
-									code = babel.transform( code, {
-										blacklist: [ 'es6.modules' ],
-										loose: [ 'es6.classes' ]
+								if ( config.buble ) {
+									code = buble.transform( code, {
+										transforms: { modules: false }
 									}).code;
 								}