diff --git a/packages/schematics/angular/application/files/root/karma.conf.js.template b/packages/schematics/angular/application/files/root/karma.conf.js.template
index a4d11df342..88505e166a 100644
--- a/packages/schematics/angular/application/files/root/karma.conf.js.template
+++ b/packages/schematics/angular/application/files/root/karma.conf.js.template
@@ -26,6 +26,7 @@ module.exports = function (config) {
     logLevel: config.LOG_INFO,
     autoWatch: true,
     browsers: ['Chrome'],
-    singleRun: false
+    singleRun: false,
+    restartOnFileChange: true
   });
 };
diff --git a/packages/schematics/angular/library/files/__projectRoot__/karma.conf.js.template b/packages/schematics/angular/library/files/__projectRoot__/karma.conf.js.template
index 04af0229f6..87b2dd32d6 100644
--- a/packages/schematics/angular/library/files/__projectRoot__/karma.conf.js.template
+++ b/packages/schematics/angular/library/files/__projectRoot__/karma.conf.js.template
@@ -26,6 +26,7 @@ module.exports = function (config) {
     logLevel: config.LOG_INFO,
     autoWatch: true,
     browsers: ['Chrome'],
-    singleRun: false
+    singleRun: false,
+    restartOnFileChange: true
   });
 };