diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method-with-finally-2/options.json b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method-with-finally-2/options.json
index 9c9cbe395b24..7edb6d2fc815 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method-with-finally-2/options.json
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method-with-finally-2/options.json
@@ -1,3 +1,3 @@
 {
-  "minNodeVersion": 8
+  "minNodeVersion": "8.0.0"
 }
\ No newline at end of file
diff --git a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method/options.json b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method/options.json
index 9c9cbe395b24..7edb6d2fc815 100644
--- a/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method/options.json
+++ b/packages/babel-plugin-proposal-async-generator-functions/test/fixtures/yield-star/return-method/options.json
@@ -1,3 +1,3 @@
 {
-  "minNodeVersion": 8
+  "minNodeVersion": "8.0.0"
 }
\ No newline at end of file