diff --git a/tests/wpt/metadata-css/cssom-1_dev/html/escape.htm.ini b/tests/wpt/metadata-css/cssom-1_dev/html/escape.htm.ini
index 06f2704fcaa..ca3b93d8303 100644
--- a/tests/wpt/metadata-css/cssom-1_dev/html/escape.htm.ini
+++ b/tests/wpt/metadata-css/cssom-1_dev/html/escape.htm.ini
@@ -2,10 +2,13 @@
   type: testharness
   [Null bytes]
     expected: FAIL
+    bug: https://github.com/servo/servo/issues/10685
 
   [Various tests]
     expected: FAIL
+    bug: https://github.com/servo/servo/issues/10685
 
   [Surrogates]
     expected: FAIL
+    bug: https://github.com/servo/servo/issues/6564
 
diff --git a/tests/wpt/metadata/webstorage/storage_setitem.html.ini b/tests/wpt/metadata/webstorage/storage_setitem.html.ini
index bbdeff86333..0a0f43019b2 100644
--- a/tests/wpt/metadata/webstorage/storage_setitem.html.ini
+++ b/tests/wpt/metadata/webstorage/storage_setitem.html.ini
@@ -3,13 +3,17 @@
   expected: TIMEOUT
   [localStorage[\] = "�"]
     expected: FAIL
+    bug: https://github.com/servo/servo/issues/6564
 
   [localStorage[\] = "�a"]
     expected: FAIL
+    bug: https://github.com/servo/servo/issues/6564
 
   [localStorage[\] = "a�"]
     expected: FAIL
+    bug: https://github.com/servo/servo/issues/6564
 
   [localStorage["0"\]]
     expected: TIMEOUT
+    bug: https://github.com/servo/servo/issues/10686