diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 3575284..14bc762 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -33,6 +33,12 @@ jobs:
         uses: arduino/setup-protoc@v1
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Start MongoDB
+        uses: supercharge/mongodb-github-action@1.11.0
+        with:
+          mongodb-version: '7.0'
+          mongodb-replica-set: rs0
+          mongodb-port: 27017
       - name: Install dependencies
         run: pnpm install --strict-peer-dependencies=false
       - name: Run lint
diff --git a/change/@apibara-indexer-b2b2208a-7a4e-4779-826d-c246b023891a.json b/change/@apibara-indexer-b2b2208a-7a4e-4779-826d-c246b023891a.json
new file mode 100644
index 0000000..c865174
--- /dev/null
+++ b/change/@apibara-indexer-b2b2208a-7a4e-4779-826d-c246b023891a.json
@@ -0,0 +1,7 @@
+{
+  "type": "prerelease",
+  "comment": "indexer: rename drizzle sink factory and fix update method",
+  "packageName": "@apibara/indexer",
+  "email": "jadejajaipal5@gmail.com",
+  "dependentChangeType": "patch"
+}
diff --git a/packages/sink-mongo/package.json b/packages/sink-mongo/package.json
index 062d81a..eed2f22 100644
--- a/packages/sink-mongo/package.json
+++ b/packages/sink-mongo/package.json
@@ -22,7 +22,8 @@
     "typecheck": "tsc --noEmit",
     "lint": "biome check .",
     "lint:fix": "pnpm lint --write",
-    "test": "vitest"
+    "test": "vitest",
+    "test:ci": "vitest run"
   },
   "devDependencies": {
     "@types/node": "^20.14.0",
diff --git a/packages/sink-mongo/src/mongo.ts b/packages/sink-mongo/src/mongo.ts
index a5c563f..4a56dda 100644
--- a/packages/sink-mongo/src/mongo.ts
+++ b/packages/sink-mongo/src/mongo.ts
@@ -32,7 +32,6 @@ export class MongoSink extends Sink {
           db: new MongoSinkTransactionDb(db, session, endCursor),
           session,
         });
-        return "Transaction committed.";
       }),
     );
   }
@@ -54,8 +53,6 @@ export class MongoSink extends Sink {
             { session },
           );
         }
-
-        return "Transaction committed.";
       }),
     );
   }
@@ -90,8 +87,6 @@ export class MongoSink extends Sink {
             { session },
           );
         }
-
-        return "Transaction committed.";
       }),
     );
   }