Remove -dev.infinity in SDK upper constraint
diff --git a/pubspec.yaml b/pubspec.yaml
index 1b87c76..0c209d2 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@
 description: >
   A platform-independent package for parsing and serializing HTTP formats.
 environment:
-  sdk: ">=1.23.0 <2.0.0-dev.infinity"
+  sdk: ">=1.23.0 <2.0.0"
 dependencies:
   charcode: "^1.1.0"
   collection: ">=0.9.1 <2.0.0"