diff --git a/tools_webrtc/ios/client.webrtc.branches/iOS (beta).json b/tools_webrtc/ios/client.webrtc.branches/iOS (beta).json
new file mode 100644
index 0000000000..ad87ca184e
--- /dev/null
+++ b/tools_webrtc/ios/client.webrtc.branches/iOS (beta).json	
@@ -0,0 +1,24 @@
+{
+  "comments": [
+    "Tests for 64-bit iOS simulators."
+  ],
+  "xcode version": "8.0",
+  "gn_args": [
+    "goma_dir=\"$(goma_dir)\"",
+    "is_component_build=false",
+    "is_debug=true",
+    "target_cpu=\"x64\"",
+    "target_os=\"ios\"",
+    "use_goma=true"
+  ],
+  "additional_compile_targets": [ "all" ],
+  "configuration": "Debug",
+  "sdk": "iphonesimulator10.0",
+  "tests": [
+    {
+      "include": "common_tests.json",
+      "device type": "iPhone 6s",
+      "os": "10.0"
+    }
+  ]
+}
diff --git a/tools_webrtc/ios/client.webrtc.branches/iOS (stable).json b/tools_webrtc/ios/client.webrtc.branches/iOS (stable).json
new file mode 100644
index 0000000000..ad87ca184e
--- /dev/null
+++ b/tools_webrtc/ios/client.webrtc.branches/iOS (stable).json	
@@ -0,0 +1,24 @@
+{
+  "comments": [
+    "Tests for 64-bit iOS simulators."
+  ],
+  "xcode version": "8.0",
+  "gn_args": [
+    "goma_dir=\"$(goma_dir)\"",
+    "is_component_build=false",
+    "is_debug=true",
+    "target_cpu=\"x64\"",
+    "target_os=\"ios\"",
+    "use_goma=true"
+  ],
+  "additional_compile_targets": [ "all" ],
+  "configuration": "Debug",
+  "sdk": "iphonesimulator10.0",
+  "tests": [
+    {
+      "include": "common_tests.json",
+      "device type": "iPhone 6s",
+      "os": "10.0"
+    }
+  ]
+}
diff --git a/tools_webrtc/mb/mb_config.pyl b/tools_webrtc/mb/mb_config.pyl
index 65d01fda60..baaedb8a47 100644
--- a/tools_webrtc/mb/mb_config.pyl
+++ b/tools_webrtc/mb/mb_config.pyl
@@ -76,6 +76,27 @@
       'Win32 Release (MSVC)': 'win_msvc_release_bot_x86',
       'Win32 Release [large tests]': 'release_bot_x86',
     },
+    'client.webrtc.branches': {
+      # iOS
+      'iOS (stable)': 'ios',
+      'iOS (beta)': 'ios',
+
+      # Mac
+      'Mac (stable)': 'release_bot_x64',
+      'Mac (beta)': 'release_bot_x64',
+
+      # Linux
+      'Linux (stable)': 'release_bot_x64',
+      'Linux (beta)': 'release_bot_x64',
+
+      # Android
+      'Android (stable)': 'android_release_bot_arm',
+      'Android (beta)': 'android_release_bot_arm',
+
+      # Windows
+      'Win (stable)': 'release_bot_x86',
+      'Win (beta)': 'release_bot_x86',
+    },
     'client.webrtc.perf': {
       # Android
       'Android32 Builder': 'perf_android_release_bot_arm',