diff --git a/testing/dart/pubspec.yaml b/testing/dart/pubspec.yaml
index c2f4df9744cde..58bf819d4e0f5 100644
--- a/testing/dart/pubspec.yaml
+++ b/testing/dart/pubspec.yaml
@@ -26,14 +26,20 @@ dependencies:
 dependency_overrides:
   async_helper:
     path: ../../../third_party/dart/pkg/async_helper
+  collection:
+    path: ../../../third_party/dart/third_party/pkg/collection
   expect:
     path: ../../../third_party/dart/pkg/expect
+  fixnum:
+    path: ../../../third_party/dart/third_party/pkg/fixnum
   litetest:
     path: ../litetest
   meta:
     path: ../../../third_party/dart/pkg/meta
   path:
     path: ../../../third_party/dart/third_party/pkg/path
+  protobuf:
+    path: ../../../third_party/dart/third_party/pkg/protobuf/protobuf
   smith:
     path: ../../../third_party/dart/pkg/smith
   sky_engine: