diff --git a/pubspec.yaml b/pubspec.yaml
index c7d8f64..e7fd176 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: effective_dart
-version: 1.4.0
+version: 1.3.1
 description: Linter rules corresponding to the guidelines in Effective Dart.
 homepage: https://github.com/tenhobi/effective_dart
 repository: https://github.com/tenhobi/effective_dart