Support the latest release of pkg/fixnum

R=skybrian@google.com

Review URL: https://chromiumcodereview.appspot.com//1399093002 .
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3c9ce1b..eab5419 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.5.0+1
+
+* Support the latest version of package `fixnum`.
+
 ## 0.5.0
  * Reorganized internals to improve performance. We now store
    field values in a list instead of a map. Private properties
diff --git a/pubspec.yaml b/pubspec.yaml
index bf20aff..b4c202b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: protobuf
-version: 0.5.0
+version: 0.5.0+1
 author: Dart Team <misc@dartlang.org>
 description: Runtime library for protobuf support.
 homepage: https://github.com/dart-lang/dart-protobuf
@@ -7,6 +7,6 @@
   sdk: '>=1.0.0 <2.0.0'
 dependencies:
   crypto: '>=0.9.0 <0.10.0'
-  fixnum: '>=0.9.0 <0.10.0'
+  fixnum: '>=0.9.0 <0.11.0'
 dev_dependencies:
   test: '>=0.12.0 <0.13.0'