diff --git a/infra/specs/internal.client.webrtc.json b/infra/specs/internal.client.webrtc.json
index 7ccfd50df4..a3d758295b 100644
--- a/infra/specs/internal.client.webrtc.json
+++ b/infra/specs/internal.client.webrtc.json
@@ -419,7 +419,7 @@
           "--write_perf_output_on_ios",
           "--xctest",
           "--xcode-build-version",
-          "14c18",
+          "15c500b",
           "--out-dir",
           "${ISOLATED_OUTDIR}"
         ],
@@ -444,10 +444,9 @@
             }
           ],
           "dimensions": {
-            "caches": "xcode_ios_14c18",
             "device_status": "available",
-            "id": "mac-254-e504",
-            "os": "iOS-15.7.8",
+            "id": "mac-438-e504",
+            "os": "iOS-17.4.1",
             "pool": "WebRTC"
           },
           "hard_timeout": 10800,
@@ -455,7 +454,7 @@
           "io_timeout": 10800,
           "named_caches": [
             {
-              "name": "xcode_ios_14c18",
+              "name": "xcode_ios_15c500b",
               "path": "Xcode.app"
             }
           ],
diff --git a/infra/specs/mixins.pyl b/infra/specs/mixins.pyl
index 135621c3ea..5e9f9badf1 100644
--- a/infra/specs/mixins.pyl
+++ b/infra/specs/mixins.pyl
@@ -71,9 +71,9 @@
     'swarming': {
       'idempotent': False,
       'dimensions': {
-        'os': 'iOS-15.7.8',
+        'os': 'iOS-17.4.1',
         'pool': 'WebRTC',
-        'id': 'mac-254-e504',
+        'id': 'mac-438-e504',
         'device_status': 'available'
       }
     }
@@ -314,18 +314,6 @@
       }
     }
   },
-  'xcode_14_main': {
-    'args': ['--xcode-build-version', '14c18'],
-    'swarming': {
-      'dimensions': {
-        'caches': 'xcode_ios_14c18'
-      },
-      'named_caches': [{
-        'name': 'xcode_ios_14c18',
-        'path': 'Xcode.app'
-      }]
-    }
-  },
   'xcode_15_main': {
     'args': ['--xcode-build-version', '15c500b'],
     'swarming': {
diff --git a/infra/specs/mixins_webrtc.pyl b/infra/specs/mixins_webrtc.pyl
index b9a6404e26..fa64b60f21 100644
--- a/infra/specs/mixins_webrtc.pyl
+++ b/infra/specs/mixins_webrtc.pyl
@@ -51,9 +51,9 @@
     'swarming': {
       'idempotent': False,
       'dimensions': {
-        'os': 'iOS-15.7.8',
+        'os': 'iOS-17.4.1',
         'pool': 'WebRTC',
-        'id': 'mac-254-e504',
+        'id': 'mac-438-e504',
         'device_status': 'available'
       },
     },
@@ -199,16 +199,4 @@
       '--xctest',
     ],
   },
-  'xcode_14_main': {
-    'args': ['--xcode-build-version', '14c18'],
-    'swarming': {
-      'dimensions': {
-        'caches': 'xcode_ios_14c18',
-      },
-      'named_caches': [{
-        'name': 'xcode_ios_14c18',
-        'path': 'Xcode.app'
-      }]
-    }
-  },
 }
diff --git a/infra/specs/waterfalls.pyl b/infra/specs/waterfalls.pyl
index fd19494af7..0248ac0afa 100644
--- a/infra/specs/waterfalls.pyl
+++ b/infra/specs/waterfalls.pyl
@@ -333,7 +333,7 @@
       'iOS64 Perf': {
         'mixins': [
           'ios-device-perf', 'webrtc-xctest', 'timeout-3h',
-          'chrome-tester-service-account', 'xcode_14_main', 'mac_toolchain',
+          'chrome-tester-service-account', 'xcode_15_main', 'mac_toolchain',
           'has_native_resultdb_integration', 'out_dir_arg'
         ],
         'test_suites': {