Remove -dev.infinity in SDK upper constraint
diff --git a/pubspec.yaml b/pubspec.yaml
index 8c13155..b3f220e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -4,7 +4,7 @@
 description: Web Server Middleware for Dart
 homepage: https://github.com/dart-lang/shelf
 environment:
-  sdk: '>=1.23.0 <2.0.0-dev.infinity'
+  sdk: '>=1.23.0 <2.0.0'
 dependencies:
   async: '>=1.10.0 <3.0.0'
   collection: '^1.5.0'