diff --git a/test/function/import-default-class/_config.js b/test/function/import-default-class/_config.js
index 4542b16..81ea9a8 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: [ 'es6.classes' ]
+	babel: [ 'es6.classes', 'es6.blockScoping' ]
 };
 
 // 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 c87363f..294e457 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: [ 'es6.classes' ]
+	babel: [ 'es6.classes', 'es6.blockScoping' ]
 };
 
 // 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 b8457ba..19e6157 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: [ 'es6.classes' ]
+	babel: [ 'es6.classes', 'es6.blockScoping' ]
 };
 
 // test copied from https://github.com/esnext/es6-module-transpiler/tree/master/test/examples/export-class-expression