diff --git a/tests/e2e/tests/build/rebuild-css-change.ts b/tests/e2e/tests/build/rebuild-css-change.ts
index 8e8a9ce1fdfd..666334ded735 100644
--- a/tests/e2e/tests/build/rebuild-css-change.ts
+++ b/tests/e2e/tests/build/rebuild-css-change.ts
@@ -17,10 +17,10 @@ export default function() {
   return silentExecAndWaitForOutputToMatch('ng', ['serve'], webpackGoodRegEx)
     // Should trigger a rebuild.
     .then(() => exec('touch', 'src/main.ts'))
-    .then(() => waitForAnyProcessOutputToMatch(webpackBadRegEx, 1000))
+    .then(() => waitForAnyProcessOutputToMatch(webpackBadRegEx, 5000))
     .then(() => waitForAnyProcessOutputToMatch(webpackGoodRegEx, 5000))
     .then(() => appendToFile('src/app/app.component.css', ':host { color: blue; }'))
-    .then(() => waitForAnyProcessOutputToMatch(webpackBadRegEx, 1000))
+    .then(() => waitForAnyProcessOutputToMatch(webpackBadRegEx, 5000))
     .then(() => waitForAnyProcessOutputToMatch(webpackGoodRegEx, 5000))
     .then(() => killAllProcesses(), (err: any) => {
       killAllProcesses();
diff --git a/tests/e2e/tests/build/rebuild.ts b/tests/e2e/tests/build/rebuild.ts
index c2cee3f0b572..a26385cb5934 100644
--- a/tests/e2e/tests/build/rebuild.ts
+++ b/tests/e2e/tests/build/rebuild.ts
@@ -22,7 +22,7 @@ export default function() {
     // Should trigger a rebuild.
     .then(() => exec('touch', 'src/main.ts'))
     .then(() => waitForAnyProcessOutputToMatch(
-        /webpack: bundle is now INVALID|webpack: Compiling.../, 1000))
+        /webpack: bundle is now INVALID|webpack: Compiling.../, 5000))
     .then(() => waitForAnyProcessOutputToMatch(
         /webpack: bundle is now VALID|webpack: Compiled successfully./, 5000))
     // Count the bundles.
@@ -61,7 +61,7 @@ export default function() {
     `))
     // Should trigger a rebuild with a new bundle.
     .then(() => waitForAnyProcessOutputToMatch(
-        /webpack: bundle is now INVALID|webpack: Compiling.../, 1000))
+        /webpack: bundle is now INVALID|webpack: Compiling.../, 5000))
     .then(() => waitForAnyProcessOutputToMatch(
         /webpack: bundle is now VALID|webpack: Compiled successfully./, 5000))
     // Count the bundles.