diff --git a/LayoutTests/ChangeLog b/LayoutTests/ChangeLog
index dc0998f..caa2136 100644
--- a/LayoutTests/ChangeLog
+++ b/LayoutTests/ChangeLog
@@ -1,3 +1,12 @@
+2018-04-27  Ryan Haddad  <ryanhaddad@apple.com>
+
+        Mark http/wpt/resource-timing/rt-resources-per-worker.html as flaky on iOS.
+        https://bugs.webkit.org/show_bug.cgi?id=180260
+
+        Unreviewed test gardening.
+
+        * platform/ios/TestExpectations:
+
 2018-04-27  Nan Wang  <n_wang@apple.com>
 
         AX: Accessibility needs to know which part of the content view is visible on iOS
diff --git a/LayoutTests/platform/ios/TestExpectations b/LayoutTests/platform/ios/TestExpectations
index 0d1e5073..eb206e7 100644
--- a/LayoutTests/platform/ios/TestExpectations
+++ b/LayoutTests/platform/ios/TestExpectations
@@ -3293,3 +3293,5 @@
 webkit.org/b/183388 fast/scrolling/scroll-to-focused-element-asynchronously.html [ Pass Failure ]
 
 webkit.org/b/184787 http/wpt/cache-storage/cache-quota.any.html [ Pass Failure ]
+
+webkit.org/b/180260 http/wpt/resource-timing/rt-resources-per-worker.html [ Pass Failure ]