更新 pubspec.yaml

8a74cba1 · 张国庆 · 1b214a5e · 8a74cba1
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,8 +4,7 @@ version: 0.0.1
 homepage:

 environment:
-  sdk: ">=2.16.2 <3.0.0"
-  flutter: ">=2.5.0"
+  sdk: '>=2.12.0 <3.0.0'

 dependencies:
  flutter: