diff --git a/CHANGELOG.md b/CHANGELOG.md
index c2f409a..15e2911 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.13.2+1
+
+* Fix new strong mode error.
+
 ## 0.13.2
 
 * Relax type of TreeNode.visit, to allow returning values from visitors.
@@ -11,7 +15,7 @@
  * **BREAKING** Fix all [strong mode][] errors and warnings.
    This involved adding more precise on some public APIs, which
    is why it may break users.
- 
+
 [strong mode]: https://github.com/dart-lang/dev_compiler/blob/master/STRONG_MODE.md
 
 ## 0.12.2
diff --git a/lib/css.dart b/lib/css.dart
index 590e835..65d386d 100644
--- a/lib/css.dart
+++ b/lib/css.dart
@@ -39,7 +39,7 @@
     var file = new SourceFile(contents, url: path.toUri(inputPath));
 
     // Parse the CSS.
-    var tree = _time(
+    StyleSheet tree = _time(
         'Parse $filename', () => new Parser(file, contents).parse(), verbose);
 
     _time('Analyzer $filename', () => new Analyzer([tree], messages), verbose)
diff --git a/pubspec.yaml b/pubspec.yaml
index c6f4d4f..3b13c66 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: csslib
-version: 0.13.2
+version: 0.13.2+1
 author: Dart Team <misc@dartlang.org>
 description: A library for parsing CSS.
 homepage: https://github.com/dart-lang/csslib