Bump quiver support to include 0.27 (#47)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 25485fd..2fc0934 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.20.4+3
+
+* Support the latest release of `pkg/quiver` (0.27).
+
 ## 0.20.4+2
 
 * Support the latest release of `pkg/quiver` (0.26).
diff --git a/pubspec.yaml b/pubspec.yaml
index d5b3a9d..64bf8bf 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: observable
-version: 0.20.4+2
+version: 0.20.4+3
 author: Dart Team <misc@dartlang.org>
 description: Support for marking objects as observable
 homepage: https://github.com/dart-lang/observable
@@ -8,6 +8,6 @@
 dependencies:
   collection: '^1.11.0'
   meta: '^1.0.4'
-  quiver: '>=0.24.0 <0.27.0'
+  quiver: '>=0.24.0 <0.28.0'
 dev_dependencies:
   test: '^0.12.17'