diff --git a/pkgs/test/CHANGELOG.md b/pkgs/test/CHANGELOG.md
index 22e0f1b3f..c2acfc7a2 100644
--- a/pkgs/test/CHANGELOG.md
+++ b/pkgs/test/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.26.1-wip
+
+* Set a debug name for test isolates.
+
 ## 1.26.0
 
 * `test()` and `group()` functions now take an optional `TestLocation` that will
diff --git a/pkgs/test/pubspec.yaml b/pkgs/test/pubspec.yaml
index d008f3cc2..e34ab8a0b 100644
--- a/pkgs/test/pubspec.yaml
+++ b/pkgs/test/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test
-version: 1.26.0
+version: 1.26.1-wip
 description: >-
   A full featured library for writing and running Dart tests across platforms.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test
@@ -37,7 +37,7 @@ dependencies:
 
   # Use an exact version until the test_api and test_core package are stable.
   test_api: 0.7.5
-  test_core: 0.6.9
+  test_core: 0.6.10-wip
 
   typed_data: ^1.3.0
   web_socket_channel: '>=2.0.0 <4.0.0'
diff --git a/pkgs/test_core/CHANGELOG.md b/pkgs/test_core/CHANGELOG.md
index d2a762145..999a58974 100644
--- a/pkgs/test_core/CHANGELOG.md
+++ b/pkgs/test_core/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.10-wip
+
+* Set a debug name for test isolates.
+
 ## 0.6.9
 
 * Add support for native assets for `dart test` in pub workspaces.
diff --git a/pkgs/test_core/lib/src/runner/vm/platform.dart b/pkgs/test_core/lib/src/runner/vm/platform.dart
index 506909db7..f2586abfb 100644
--- a/pkgs/test_core/lib/src/runner/vm/platform.dart
+++ b/pkgs/test_core/lib/src/runner/vm/platform.dart
@@ -246,8 +246,14 @@ stderr: ${processResult.stderr}''');
 
   /// Runs [uri] in an isolate, passing [message].
   Future<Isolate> _spawnIsolateWithUri(Uri uri, SendPort message) async {
-    return await Isolate.spawnUri(uri, [], message,
-        packageConfig: await packageConfigUri, checked: true);
+    return await Isolate.spawnUri(
+      uri,
+      [],
+      message,
+      packageConfig: await packageConfigUri,
+      checked: true,
+      debugName: 'test_suite:$uri',
+    );
   }
 
   Future<Isolate> _spawnPrecompiledIsolate(String testPath, SendPort message,
@@ -284,8 +290,14 @@ stderr: ${processResult.stderr}''');
         packageConfig = null;
       }
     }
-    return await Isolate.spawnUri(testUri, [], message,
-        packageConfig: packageConfig?.uri, checked: true);
+    return await Isolate.spawnUri(
+      testUri,
+      [],
+      message,
+      packageConfig: packageConfig?.uri,
+      checked: true,
+      debugName: 'test_suite:$testUri',
+    );
   }
 
   /// Bootstraps the test at [testPath] and writes its contents to a temporary
diff --git a/pkgs/test_core/pubspec.yaml b/pkgs/test_core/pubspec.yaml
index 7e29a4ad0..c5da5adfc 100644
--- a/pkgs/test_core/pubspec.yaml
+++ b/pkgs/test_core/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_core
-version: 0.6.9
+version: 0.6.10-wip
 description: A basic library for writing tests and running them on the VM.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test_core
 issue_tracker: https://github.com/dart-lang/test/issues?q=is%3Aissue+is%3Aopen+label%3Apackage%3Atest