diff --git a/packages/file_service/pubspec.yaml b/packages/file_service/pubspec.yaml
index a9cc1f18..1ea91b49 100644
--- a/packages/file_service/pubspec.yaml
+++ b/packages/file_service/pubspec.yaml
@@ -4,7 +4,7 @@ description: Angel service that persists data to a file on disk, stored as a JSO
 homepage: https://angel3-framework.web.app/
 repository: https://github.com/dukefirehawk/angel/tree/master/packages/file_service
 environment:
-  sdk: '>=2.12.0 <3.0.0'
+  sdk: '>=2.15.0 <3.0.0'
 dependencies:
   angel3_framework: ^6.0.0
   file: ^6.1.1