diff --git a/integration_tests/wasm/test/hello_world_test.dart b/integration_tests/wasm/test/hello_world_test.dart
index 74f44bb8f..9ddd5116b 100644
--- a/integration_tests/wasm/test/hello_world_test.dart
+++ b/integration_tests/wasm/test/hello_world_test.dart
@@ -13,4 +13,12 @@ void main() {
   test('1 == 1', () {
     expect(1, equals(1));
   });
+
+  test('asserts are enabled', () {
+    expect(shouldFail, throwsA(isA<AssertionError>()));
+  });
+}
+
+void shouldFail() {
+  assert(1 == 2);
 }
diff --git a/pkgs/test/CHANGELOG.md b/pkgs/test/CHANGELOG.md
index f37470514..0bb81cdc3 100644
--- a/pkgs/test/CHANGELOG.md
+++ b/pkgs/test/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 1.25.7
+
+* Enable asserts for `dart2wasm` tests.
+
 ## 1.25.6
 
 * Point API doc links to `package:test` canonical libraries.
diff --git a/pkgs/test/pubspec.yaml b/pkgs/test/pubspec.yaml
index 6f58fe3b4..9037cf178 100644
--- a/pkgs/test/pubspec.yaml
+++ b/pkgs/test/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test
-version: 1.25.6
+version: 1.25.7
 description: >-
   A full featured library for writing and running Dart tests across platforms.
 repository: https://github.com/dart-lang/test/tree/master/pkgs/test
@@ -35,7 +35,7 @@ dependencies:
 
   # Use an exact version until the test_api and test_core package are stable.
   test_api: 0.7.2
-  test_core: 0.6.3
+  test_core: 0.6.4
 
   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 602304e66..cd058d450 100644
--- a/pkgs/test_core/CHANGELOG.md
+++ b/pkgs/test_core/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.6.4
+
+* Enable asserts for `dart2wasm` tests.
+
 ## 0.6.3
 
 * Update min SDK constraint to 3.2.0.
diff --git a/pkgs/test_core/lib/src/runner/wasm_compiler_pool.dart b/pkgs/test_core/lib/src/runner/wasm_compiler_pool.dart
index 08a7c0ae3..7290da49d 100644
--- a/pkgs/test_core/lib/src/runner/wasm_compiler_pool.dart
+++ b/pkgs/test_core/lib/src/runner/wasm_compiler_pool.dart
@@ -36,6 +36,7 @@ class WasmCompilerPool extends CompilerPool {
       final process = await Process.start(Platform.resolvedExecutable, [
         'compile',
         'wasm',
+        '--enable-asserts',
         '--packages=${(await packageConfigUri).path}',
         for (var experiment in enabledExperiments)
           '--enable-experiment=$experiment',
diff --git a/pkgs/test_core/pubspec.yaml b/pkgs/test_core/pubspec.yaml
index afbf24a75..0deb5aca1 100644
--- a/pkgs/test_core/pubspec.yaml
+++ b/pkgs/test_core/pubspec.yaml
@@ -1,5 +1,5 @@
 name: test_core
-version: 0.6.3
+version: 0.6.4
 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