diff --git a/packages/angular_devkit/build_angular/src/angular-cli-files/models/webpack-configs/test.ts b/packages/angular_devkit/build_angular/src/angular-cli-files/models/webpack-configs/test.ts
index 6e51b322ce46..36a4da57151c 100644
--- a/packages/angular_devkit/build_angular/src/angular-cli-files/models/webpack-configs/test.ts
+++ b/packages/angular_devkit/build_angular/src/angular-cli-files/models/webpack-configs/test.ts
@@ -47,7 +47,7 @@ export function getTestConfig(
     }
 
     extraRules.push({
-      test: /\.(js|ts)$/,
+      test: /\.(jsx?|tsx?)$/,
       loader: 'istanbul-instrumenter-loader',
       options: { esModules: true },
       enforce: 'post',