diff --git a/pubspec.yaml b/pubspec.yaml
index 4ed3a67..0e89009 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -14,8 +14,8 @@ dev_dependencies:
 
 
 environment:
-  sdk: ">=2.0.0 <3.0.0"
-  flutter: ">=1.10.0"
+  sdk: ">=2.12.0 <3.0.0"
+  flutter: ">=2.0.0"
 # For information on the generic Dart part of this file, see the
 # following page: https://www.dartlang.org/tools/pub/pubspec