diff --git a/Dart.gitignore b/Dart.gitignore
index 4d2a4d6d..58950beb 100644
--- a/Dart.gitignore
+++ b/Dart.gitignore
@@ -1,6 +1,7 @@
 # See https://www.dartlang.org/tools/private-files.html
 
 # Files and directories created by pub
+.dart_tool/
 .packages
 .pub/
 build/