diff --git a/packages/brick_offline_first/CHANGELOG.md b/packages/brick_offline_first/CHANGELOG.md
index 811ffc64..a71b01e2 100644
--- a/packages/brick_offline_first/CHANGELOG.md
+++ b/packages/brick_offline_first/CHANGELOG.md
@@ -1,6 +1,9 @@
 ## Unreleased
 
+## 3.4.0
+
 - Change `OfflineFirstRepository#exists` behavior: the check against memory cache will only return `true` if results have been found, otherwise it will continue to the SQLite provider
+- Forward errors from `OfflineFirstRepository#subscribe` streams to their callers (@sonbs21 #484)
 
 ## 3.3.0
 
diff --git a/packages/brick_offline_first/pubspec.yaml b/packages/brick_offline_first/pubspec.yaml
index ffb36231..bf93246d 100644
--- a/packages/brick_offline_first/pubspec.yaml
+++ b/packages/brick_offline_first/pubspec.yaml
@@ -5,7 +5,7 @@ homepage: https://github.com/GetDutchie/brick/tree/main/packages/brick_offline_f
 issue_tracker: https://github.com/GetDutchie/brick/issues
 repository: https://github.com/GetDutchie/brick
 
-version: 3.3.0
+version: 3.4.0
 
 environment:
   sdk: ">=2.18.0 <4.0.0"
diff --git a/packages/brick_supabase/CHANGELOG.md b/packages/brick_supabase/CHANGELOG.md
index dfa1e6ee..f0426783 100644
--- a/packages/brick_supabase/CHANGELOG.md
+++ b/packages/brick_supabase/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## Unreleased
 
+## 1.2.0
+
+- Add `SupabaseProvider#update` and `SupabaseProvider#insert` to conform to Supabase policy restrictions
+- Use `columnName` instead of `evaluatedField` in `QuerySupabaseTransformer` when searching for non null associations
+
 ## 1.1.3
 
 - Add `query:` to `@Supabase` to override the generated query at runtime
diff --git a/packages/brick_supabase/lib/src/query_supabase_transformer.dart b/packages/brick_supabase/lib/src/query_supabase_transformer.dart
index 2568d77f..7bc0e7e4 100644
--- a/packages/brick_supabase/lib/src/query_supabase_transformer.dart
+++ b/packages/brick_supabase/lib/src/query_supabase_transformer.dart
@@ -177,7 +177,7 @@ class QuerySupabaseTransformer<_Model extends SupabaseModel> {
           condition.value as WhereCondition, associationAdapter, newLeadingAssociations, [
         if (!definition.associationIsNullable)
           {
-            condition.evaluatedField: 'not.is.null',
+            definition.columnName: 'not.is.null',
           },
         ...associationConditions,
       ]);
diff --git a/packages/brick_supabase/lib/src/supabase_provider.dart b/packages/brick_supabase/lib/src/supabase_provider.dart
index c18066b3..c7d6315b 100644
--- a/packages/brick_supabase/lib/src/supabase_provider.dart
+++ b/packages/brick_supabase/lib/src/supabase_provider.dart
@@ -6,6 +6,12 @@ import 'package:logging/logging.dart';
 import 'package:meta/meta.dart';
 import 'package:supabase/supabase.dart';
 
+enum UpsertMethod {
+  insert,
+  update,
+  upsert,
+}
+
 /// Retrieves from an HTTP endpoint
 class SupabaseProvider implements Provider<SupabaseModel> {
   final SupabaseClient client;
@@ -77,6 +83,36 @@ class SupabaseProvider implements Provider<SupabaseModel> {
     );
   }
 
+  /// In almost all cases, use [upsert]. This method is provided for cases when a table's
+  /// policy permits inserts without updates.
+  Future<TModel> insert<TModel extends SupabaseModel>(instance, {query, repository}) async {
+    final adapter = modelDictionary.adapterFor[TModel]!;
+    final output = await adapter.toSupabase(instance, provider: this, repository: repository);
+
+    return await recursiveAssociationUpsert(
+      output,
+      method: UpsertMethod.insert,
+      type: TModel,
+      query: query,
+      repository: repository,
+    ) as TModel;
+  }
+
+  /// In almost all cases, use [upsert]. This method is provided for cases when a table's
+  /// policy permits updates without inserts.
+  Future<TModel> update<TModel extends SupabaseModel>(instance, {query, repository}) async {
+    final adapter = modelDictionary.adapterFor[TModel]!;
+    final output = await adapter.toSupabase(instance, provider: this, repository: repository);
+
+    return await recursiveAssociationUpsert(
+      output,
+      method: UpsertMethod.update,
+      type: TModel,
+      query: query,
+      repository: repository,
+    ) as TModel;
+  }
+
   /// Association models are upserted recursively before the requested instance is upserted.
   /// Because it's unknown if there has been any change from the local association to the remote
   /// association, all associations and their associations are upserted on a parent's upsert.
@@ -101,6 +137,7 @@ class SupabaseProvider implements Provider<SupabaseModel> {
   @protected
   Future<SupabaseModel> upsertByType(
     Map<String, dynamic> serializedInstance, {
+    UpsertMethod method = UpsertMethod.upsert,
     required Type type,
     Query? query,
     ModelRepository<SupabaseModel>? repository,
@@ -112,10 +149,20 @@ class SupabaseProvider implements Provider<SupabaseModel> {
     final queryTransformer =
         QuerySupabaseTransformer(adapter: adapter, modelDictionary: modelDictionary, query: query);
 
-    final builder = adapter.uniqueFields.fold(
-        client
-            .from(adapter.supabaseTableName)
-            .upsert(serializedInstance, onConflict: adapter.onConflict), (acc, uniqueFieldName) {
+    final builderFilter = () {
+      switch (method) {
+        case UpsertMethod.insert:
+          return client.from(adapter.supabaseTableName).insert(serializedInstance);
+        case UpsertMethod.update:
+          return client.from(adapter.supabaseTableName).update(serializedInstance);
+        case UpsertMethod.upsert:
+          return client
+              .from(adapter.supabaseTableName)
+              .upsert(serializedInstance, onConflict: adapter.onConflict);
+      }
+    }();
+
+    final builder = adapter.uniqueFields.fold(builderFilter, (acc, uniqueFieldName) {
       final columnName = adapter.fieldsToSupabaseColumns[uniqueFieldName]!.columnName;
       if (serializedInstance.containsKey(columnName)) {
         return acc.eq(columnName, serializedInstance[columnName]);
@@ -136,6 +183,7 @@ class SupabaseProvider implements Provider<SupabaseModel> {
   @protected
   Future<SupabaseModel> recursiveAssociationUpsert(
     Map<String, dynamic> serializedInstance, {
+    UpsertMethod method = UpsertMethod.upsert,
     required Type type,
     Query? query,
     ModelRepository<SupabaseModel>? repository,
@@ -157,6 +205,7 @@ class SupabaseProvider implements Provider<SupabaseModel> {
 
       await recursiveAssociationUpsert(
         Map<String, dynamic>.from(serializedInstance[association.columnName]),
+        method: method,
         type: association.associationType!,
         query: query,
         repository: repository,
@@ -166,6 +215,7 @@ class SupabaseProvider implements Provider<SupabaseModel> {
 
     return await upsertByType(
       serializedInstance,
+      method: method,
       type: type,
       query: query,
       repository: repository,
diff --git a/packages/brick_supabase/pubspec.yaml b/packages/brick_supabase/pubspec.yaml
index 25ca58d8..0cf40b58 100644
--- a/packages/brick_supabase/pubspec.yaml
+++ b/packages/brick_supabase/pubspec.yaml
@@ -4,7 +4,7 @@ homepage: https://github.com/GetDutchie/brick/tree/main/packages/brick_supabase
 issue_tracker: https://github.com/GetDutchie/brick/issues
 repository: https://github.com/GetDutchie/brick
 
-version: 1.1.3
+version: 1.2.0
 
 environment:
   sdk: ">=3.0.0 <4.0.0"
diff --git a/packages/brick_supabase/test/query_supabase_transformer_test.dart b/packages/brick_supabase/test/query_supabase_transformer_test.dart
index 7ef5fd0d..776f53dc 100644
--- a/packages/brick_supabase/test/query_supabase_transformer_test.dart
+++ b/packages/brick_supabase/test/query_supabase_transformer_test.dart
@@ -98,7 +98,7 @@ void main() {
 
             expect(
               select.query,
-              'select=id,name,assoc_id:demos!assoc_id(id,name,custom_age),assocs:demos(id,name,custom_age)&demos.name=eq.Thomas&assoc=not.is.null',
+              'select=id,name,assoc_id:demos!assoc_id(id,name,custom_age),assocs:demos(id,name,custom_age)&demos.name=eq.Thomas&assoc_id=not.is.null',
             );
           });
         });
diff --git a/packages/brick_supabase/test/supabase_provider_test.dart b/packages/brick_supabase/test/supabase_provider_test.dart
index ea5f1d84..5707f2f8 100644
--- a/packages/brick_supabase/test/supabase_provider_test.dart
+++ b/packages/brick_supabase/test/supabase_provider_test.dart
@@ -60,6 +60,40 @@ void main() {
       expect(retrieved[1].age, 2);
     });
 
+    test('#insert', () async {
+      final req = SupabaseRequest<Demo>(
+        requestMethod: 'POST',
+        filter: 'id=eq.1',
+        limit: 1,
+      );
+      final instance = Demo(age: 1, name: 'Demo 1', id: '1');
+      final resp = SupabaseResponse(await mock.serialize(instance));
+      mock.handle({req: resp});
+
+      final provider = SupabaseProvider(mock.client, modelDictionary: supabaseModelDictionary);
+      final inserted = await provider.insert<Demo>(instance);
+      expect(inserted.id, instance.id);
+      expect(inserted.age, instance.age);
+      expect(inserted.name, instance.name);
+    });
+
+    test('#update', () async {
+      final req = SupabaseRequest<Demo>(
+        requestMethod: 'PATCH',
+        filter: 'id=eq.1',
+        limit: 1,
+      );
+      final instance = Demo(age: 1, name: 'Demo 1', id: '1');
+      final resp = SupabaseResponse(await mock.serialize(instance));
+      mock.handle({req: resp});
+
+      final provider = SupabaseProvider(mock.client, modelDictionary: supabaseModelDictionary);
+      final inserted = await provider.update<Demo>(instance);
+      expect(inserted.id, instance.id);
+      expect(inserted.age, instance.age);
+      expect(inserted.name, instance.name);
+    });
+
     group('#upsert', () {
       test('no associations', () async {
         final req = SupabaseRequest<Demo>(