widen the version range on webkit_inspection_protocol (#9)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9428cd5..f83d5d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## unreleased
+
+- widen the version constraint on `package:webkit_inspection_protocol`
+
 ## 0.1.2
 
 - lower min sdk version to match Flutter stable
diff --git a/pubspec.yaml b/pubspec.yaml
index ea8a373..9cacf1c 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,7 +1,7 @@
 name: browser_launcher
 description: Provides a standardized way to launch web browsers for testing and tools.
 
-version: 0.1.2
+version: 0.1.3-dev
 
 author: Dart Team <misc@dartlang.org>
 homepage: https://github.com/dart-lang/browser_launcher
@@ -11,7 +11,7 @@
 
 dependencies:
   path: ^1.6.2
-  webkit_inspection_protocol: ^0.4.0
+  webkit_inspection_protocol: '>=0.4.0 <0.6.0'
 
 dev_dependencies:
   pedantic: ^1.5.0