diff --git a/e2e_test/pubspec.yaml b/e2e_test/pubspec.yaml
index 9d6755c..69ee20d 100644
--- a/e2e_test/pubspec.yaml
+++ b/e2e_test/pubspec.yaml
@@ -2,7 +2,7 @@ name: e2e_test
 publish_to: none
 
 environment:
-  sdk: '>=2.19.0 <3.0.0'
+  sdk: '>=2.19.0 <4.0.0'
 
 dependencies:
   bazel_worker:
diff --git a/pubspec.yaml b/pubspec.yaml
index ba56763..358f03e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -5,7 +5,7 @@ description: >-
 repository: https://github.com/dart-lang/bazel_worker
 
 environment:
-  sdk: '>=2.19.0 <3.0.0'
+  sdk: '>=2.19.0 <4.0.0'
 
 dependencies:
   async: ^2.5.0