diff --git a/tutorial/dart/server/pubspec.yaml b/tutorial/dart/server/pubspec.yaml
index 18d0737..b0b012d 100644
--- a/tutorial/dart/server/pubspec.yaml
+++ b/tutorial/dart/server/pubspec.yaml
@@ -22,10 +22,10 @@
 homepage: http://thrift.apache.org
 
 environment:
-  sdk: ">=1.13.0 <2.0.0"
+  sdk: ">=1.13.0 <3.0.0"
 
 dependencies:
-  args: ^0.13.0
+  args: ">=0.13.0 <2.0.0"
   shared:
     path: ../gen-dart/shared
   thrift: