diff --git a/dev/missing_dependency_tests/pubspec.yaml b/dev/missing_dependency_tests/pubspec.yaml
index 16de1c4..694910f 100644
--- a/dev/missing_dependency_tests/pubspec.yaml
+++ b/dev/missing_dependency_tests/pubspec.yaml
@@ -1,4 +1,9 @@
 name: missing_dependency_tests
+
+environment:
+  # The pub client defaults to an <2.0.0 sdk constraint which we need to explicitly overwrite.
+  sdk: ">=2.0.0-dev.68.0 <3.0.0"
+
 dependencies:
   flutter:
     sdk: flutter