diff --git a/web/gr-delete-repo.ts b/web/gr-delete-repo.ts
index 5a2ece1..55995fd 100644
--- a/web/gr-delete-repo.ts
+++ b/web/gr-delete-repo.ts
@@ -21,7 +21,7 @@
   RepoName,
 } from '@gerritcodereview/typescript-api/rest-api';
 import {css, html, LitElement} from 'lit';
-import {customElement, property, query, state} from 'lit/decorators';
+import {customElement, property, query, state} from 'lit/decorators.js';
 
 // TODO: This should be defined and exposed by @gerritcodereview/typescript-api
 type GrOverlay = Element & {
diff --git a/web/test/test-setup.ts b/web/test/test-setup.ts
index ddeaf89..2196ebc 100644
--- a/web/test/test-setup.ts
+++ b/web/test/test-setup.ts
@@ -14,7 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import 'chai/chai';
+import 'chai/chai.js';
 import '@gerritcodereview/typescript-api/gerrit';
 import {css} from 'lit';