diff --git a/frontend_server_client/pubspec.yaml b/frontend_server_client/pubspec.yaml
index 6eb666759..fe48b26df 100644
--- a/frontend_server_client/pubspec.yaml
+++ b/frontend_server_client/pubspec.yaml
@@ -6,7 +6,7 @@ description: >-
 repository: https://github.com/dart-lang/webdev/tree/master/frontend_server_client
 
 environment:
-  sdk: ^3.0.0
+  sdk: ^3.1.0
 
 dependencies:
   async: ^2.5.0