diff --git a/firefox-ios/Client/Experiments/initial_experiments.json b/firefox-ios/Client/Experiments/initial_experiments.json
index 0bda5a80e80a..f2f3ca818452 100644
--- a/firefox-ios/Client/Experiments/initial_experiments.json
+++ b/firefox-ios/Client/Experiments/initial_experiments.json
@@ -75,7 +75,12 @@
       "featureValidationOptOut": false,
       "localizations": null,
       "locales": null,
-      "publishedDate": "2024-03-05T16:11:17.007782Z"
+      "publishedDate": "2024-03-05T16:11:17.007782Z",
+      "isFirefoxLabsOptIn": false,
+      "firefoxLabsTitle": null,
+      "firefoxLabsDescription": null,
+      "firefoxLabsGroup": null,
+      "requiresRestart": false
     },
     {
       "schemaVersion": "1.12.0",
@@ -138,7 +143,88 @@
       "featureValidationOptOut": false,
       "localizations": null,
       "locales": null,
-      "publishedDate": null
+      "publishedDate": null,
+      "isFirefoxLabsOptIn": false,
+      "firefoxLabsTitle": null,
+      "firefoxLabsDescription": null,
+      "firefoxLabsGroup": null,
+      "requiresRestart": false
+    },
+    {
+      "schemaVersion": "1.12.0",
+      "slug": "long-term-holdback-2025-h1-growth-ios",
+      "id": "long-term-holdback-2025-h1-growth-ios",
+      "arguments": {},
+      "application": "org.mozilla.ios.Firefox",
+      "appName": "firefox_ios",
+      "appId": "org.mozilla.ios.Firefox",
+      "channel": "release",
+      "userFacingName": "Long term holdback 2025 H1 Growth iOS",
+      "userFacingDescription": "Long-term holdback for growth experiments",
+      "isEnrollmentPaused": false,
+      "isRollout": false,
+      "bucketConfig": {
+        "randomizationUnit": "nimbus_id",
+        "namespace": "ios-no-feature-ios-release-2",
+        "start": 0,
+        "count": 10000,
+        "total": 10000
+      },
+      "featureIds": [
+        "no-feature-ios"
+      ],
+      "probeSets": [],
+      "outcomes": [],
+      "branches": [
+        {
+          "slug": "delivery",
+          "ratio": 19,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "no-feature-ios",
+              "enabled": true,
+              "value": {}
+            }
+          ]
+        },
+        {
+          "slug": "holdback",
+          "ratio": 1,
+          "feature": {
+            "featureId": "this-is-included-for-mobile-pre-96-support",
+            "enabled": false,
+            "value": {}
+          },
+          "features": [
+            {
+              "featureId": "no-feature-ios",
+              "enabled": true,
+              "value": {}
+            }
+          ]
+        }
+      ],
+      "targeting": "((is_already_enrolled) || ((app_version|versionCompare('123.!') >= 0)))",
+      "startDate": "2024-12-12",
+      "enrollmentEndDate": null,
+      "endDate": null,
+      "proposedDuration": 100,
+      "proposedEnrollment": 100,
+      "referenceBranch": "holdback",
+      "featureValidationOptOut": false,
+      "localizations": null,
+      "locales": null,
+      "publishedDate": "2024-12-12T20:37:24.603794Z",
+      "isFirefoxLabsOptIn": false,
+      "firefoxLabsTitle": null,
+      "firefoxLabsDescription": null,
+      "firefoxLabsGroup": null,
+      "requiresRestart": false
     }
   ]
 }