Bump version to 2.3.7 (#75)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d35ce2..161ef5d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+#### 2.3.7
+
+* Fix Dart 2 error.
+
 #### 2.3.6
 
 * Relax sdk upper bound constraint to  '<2.0.0' to allow 'edge' dart sdk use.
diff --git a/pubspec.yaml b/pubspec.yaml
index 3cedcab..38efe5e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,5 +1,5 @@
 name: file
-version: 2.3.6
+version: 2.3.7
 authors:
 - Matan Lurey <matanl@google.com>
 - Yegor Jbanov <yjbanov@google.com>