diff --git a/lib/dart/pubspec.yaml b/lib/dart/pubspec.yaml
index 7e20548..069818f 100644
--- a/lib/dart/pubspec.yaml
+++ b/lib/dart/pubspec.yaml
@@ -16,7 +16,7 @@
 # under the License.
 
 name: thrift
-version: 0.20.0
+version: 0.21.0
 description: >
   A Dart library for Apache Thrift
 author: Apache Thrift Developers <dev@thrift.apache.org>