diff --git a/tools_webrtc/ios/tests/common_tests.json b/tools_webrtc/ios/tests/common_tests.json
index 910b94b856..25f6ea3160 100644
--- a/tools_webrtc/ios/tests/common_tests.json
+++ b/tools_webrtc/ios/tests/common_tests.json
@@ -33,6 +33,9 @@
     },
     {
       "app": "voice_engine_unittests"
+    },
+    {
+      "app": "webrtc_nonparallel_tests"
     }
   ]
 }
diff --git a/webrtc/base/virtualsocket_unittest.cc b/webrtc/base/virtualsocket_unittest.cc
index cab8bb0dc3..5f62fd1ae2 100644
--- a/webrtc/base/virtualsocket_unittest.cc
+++ b/webrtc/base/virtualsocket_unittest.cc
@@ -912,7 +912,15 @@ TEST_F(VirtualSocketServerTest, bandwidth_v6) {
   BandwidthTest(kIPv6AnyAddress);
 }
 
-TEST_F(VirtualSocketServerTest, delay_v4) {
+// Disabled on iOS simulator since it's a test that relies on being able to
+// process packets fast enough in real time, which isn't the case in the
+// simulator.
+#if defined(TARGET_IPHONE_SIMULATOR)
+#define MAYBE_delay_v4 DISABLED_delay_v4
+#else
+#define MAYBE_delay_v4 delay_v4
+#endif
+TEST_F(VirtualSocketServerTest, MAYBE_delay_v4) {
   DelayTest(kIPv4AnyAddress);
 }