Support shelf 0.7.0.

R=kevmoo@google.com

Review URL: https://codereview.chromium.org//1660593002 .
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 958c11a..3c5b7c1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.2.3+3
+
+* Support `shelf` 0.7.0.
+
 ## 0.2.3+2
 
 * Support `http_parser` 2.0.0.
diff --git a/pubspec.yaml b/pubspec.yaml
index 9bb02e9..b59e692 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: shelf_static
-version: 0.2.3+2
+version: 0.2.3+3
 author: Dart Team <misc@dartlang.org>
 description: Static file server support for Shelf
 homepage: https://github.com/dart-lang/shelf_static
@@ -9,7 +9,7 @@
   http_parser: '>=0.0.2+2 <3.0.0'
   mime: '>=0.9.0 <0.10.0'
   path: '>=1.1.0 <2.0.0'
-  shelf: '>=0.5.7 <0.7.0'
+  shelf: '>=0.5.7 <0.8.0'
 dev_dependencies:
   args: '>=0.12.0 <0.14.0'
   scheduled_test: '>=0.12.0 <0.13.0'