bump version to 0.5.1+2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22cc746..0b1247d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.5.1+2
+
+* Bugfix: remove dependency on `pkg/crypto` for real.
+
 ## 0.5.1+1
 
 * Require at least Dart SDK 1.13.
diff --git a/pubspec.yaml b/pubspec.yaml
index e768fbc..688be86 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: protobuf
-version: 0.5.1+1
+version: 0.5.1+2
 author: Dart Team <misc@dartlang.org>
 description: Runtime library for protobuf support.
 homepage: https://github.com/dart-lang/dart-protobuf