diff --git a/.changeset/fast-flowers-scream.md b/.changeset/fast-flowers-scream.md
new file mode 100644
index 000000000..75182d34e
--- /dev/null
+++ b/.changeset/fast-flowers-scream.md
@@ -0,0 +1,7 @@
+---
+'@powersync/service-module-mongodb-storage': patch
+'@powersync/lib-service-mongodb': patch
+'@powersync/service-image': patch
+---
+
+Skip large rows, rather than causing hard replication errors
diff --git a/libs/lib-mongodb/package.json b/libs/lib-mongodb/package.json
index 419b5fb7e..6a7bdb875 100644
--- a/libs/lib-mongodb/package.json
+++ b/libs/lib-mongodb/package.json
@@ -30,7 +30,7 @@
   "dependencies": {
     "@powersync/lib-services-framework": "workspace:*",
     "bson": "^6.10.3",
-    "mongodb": "^6.13.0",
+    "mongodb": "^6.14.1",
     "ts-codec": "^1.3.0",
     "uri-js": "^4.4.1"
   },
diff --git a/modules/module-mongodb-storage/src/storage/implementation/MongoBucketBatch.ts b/modules/module-mongodb-storage/src/storage/implementation/MongoBucketBatch.ts
index 04ed68ca4..41df4e9b9 100644
--- a/modules/module-mongodb-storage/src/storage/implementation/MongoBucketBatch.ts
+++ b/modules/module-mongodb-storage/src/storage/implementation/MongoBucketBatch.ts
@@ -24,7 +24,7 @@ import { idPrefixFilter } from './util.js';
 /**
  * 15MB
  */
-const MAX_ROW_SIZE = 15 * 1024 * 1024;
+export const MAX_ROW_SIZE = 15 * 1024 * 1024;
 
 // Currently, we can only have a single flush() at a time, since it locks the op_id sequence.
 // While the MongoDB transaction retry mechanism handles this okay, using an in-process Mutex
diff --git a/modules/module-mongodb-storage/src/storage/implementation/PersistedBatch.ts b/modules/module-mongodb-storage/src/storage/implementation/PersistedBatch.ts
index e1f128eec..5e3ddfa71 100644
--- a/modules/module-mongodb-storage/src/storage/implementation/PersistedBatch.ts
+++ b/modules/module-mongodb-storage/src/storage/implementation/PersistedBatch.ts
@@ -5,7 +5,7 @@ import * as bson from 'bson';
 
 import { logger } from '@powersync/lib-services-framework';
 import { InternalOpId, storage, utils } from '@powersync/service-core';
-import { currentBucketKey } from './MongoBucketBatch.js';
+import { currentBucketKey, MAX_ROW_SIZE } from './MongoBucketBatch.js';
 import { MongoIdSequence } from './MongoIdSequence.js';
 import { PowerSyncMongo } from './db.js';
 import {
@@ -83,11 +83,20 @@ export class PersistedBatch {
 
     for (const k of options.evaluated) {
       const key = currentBucketKey(k);
-      remaining_buckets.delete(key);
 
       // INSERT
       const recordData = JSONBig.stringify(k.data);
       const checksum = utils.hashData(k.table, k.id, recordData);
+      if (recordData.length > MAX_ROW_SIZE) {
+        // In many cases, the raw data size would have been too large already. But there are cases where
+        // the BSON size is small enough, but the JSON size is too large.
+        // In these cases, we can't store the data, so we skip it, or generate a REMOVE operation if the row
+        // was synced previously.
+        logger.error(`powersync_${this.group_id} Row ${key} too large: ${recordData.length} bytes. Removing.`);
+        continue;
+      }
+
+      remaining_buckets.delete(key);
       this.currentSize += recordData.length + 200;
 
       const op_id = options.op_seq.next();
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a38171f1f..a9a6db483 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -75,8 +75,8 @@ importers:
         specifier: ^6.10.3
         version: 6.10.3
       mongodb:
-        specifier: ^6.13.0
-        version: 6.13.0(socks@2.8.3)
+        specifier: ^6.14.1
+        version: 6.14.2(socks@2.8.3)
       ts-codec:
         specifier: ^1.3.0
         version: 1.3.0
@@ -703,8 +703,8 @@ importers:
         specifier: ^10.0.1
         version: 10.4.3
       mongodb:
-        specifier: ^6.13.0
-        version: 6.13.0(socks@2.8.3)
+        specifier: ^6.14.1
+        version: 6.14.2(socks@2.8.3)
       node-fetch:
         specifier: ^3.3.2
         version: 3.3.2
@@ -2861,8 +2861,8 @@ packages:
   mongodb-connection-string-url@3.0.1:
     resolution: {integrity: sha512-XqMGwRX0Lgn05TDB4PyG2h2kKO/FfWJyCzYQbIhXUxz7ETt0I/FqHjUeqj37irJ+Dl1ZtU82uYyj14u2XsZKfg==}
 
-  mongodb@6.13.0:
-    resolution: {integrity: sha512-KeESYR5TEaFxOuwRqkOm3XOsMqCSkdeDMjaW5u2nuKfX7rqaofp7JQGoi7sVqQcNJTKuveNbzZtWMstb8ABP6Q==}
+  mongodb@6.14.2:
+    resolution: {integrity: sha512-kMEHNo0F3P6QKDq17zcDuPeaywK/YaJVCEQRzPF3TOM/Bl9MFg64YE5Tu7ifj37qZJMhwU1tl2Ioivws5gRG5Q==}
     engines: {node: '>=16.20.1'}
     peerDependencies:
       '@aws-sdk/credential-providers': ^3.188.0
@@ -6429,7 +6429,7 @@ snapshots:
       '@types/whatwg-url': 11.0.5
       whatwg-url: 13.0.0
 
-  mongodb@6.13.0(socks@2.8.3):
+  mongodb@6.14.2(socks@2.8.3):
     dependencies:
       '@mongodb-js/saslprep': 1.1.9
       bson: 6.10.3
diff --git a/service/package.json b/service/package.json
index 0c292da19..4a3c4f34c 100644
--- a/service/package.json
+++ b/service/package.json
@@ -36,7 +36,7 @@
     "ix": "^5.0.0",
     "jose": "^4.15.1",
     "lru-cache": "^10.0.1",
-    "mongodb": "^6.13.0",
+    "mongodb": "^6.14.1",
     "node-fetch": "^3.3.2",
     "pgwire": "github:kagis/pgwire#f1cb95f9a0f42a612bb5a6b67bb2eb793fc5fc87",
     "ts-codec": "^1.3.0",