diff --git a/package.json b/package.json
index 5a5db462..70b0515d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "polymesh-rest-api",
-  "version": "4.0.0-alpha.8",
+  "version": "4.0.0-alpha.9",
   "description": "Provides a REST like interface for interacting with the Polymesh blockchain",
   "author": "Polymesh Association",
   "private": true,
diff --git a/src/main.ts b/src/main.ts
index fb985fb1..2d24b144 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -47,7 +47,7 @@ async function bootstrap(): Promise<void> {
   const options = new DocumentBuilder()
     .setTitle(swaggerTitle)
     .setDescription(swaggerDescription)
-    .setVersion('4.0.0-alpha.8');
+    .setVersion('4.0.0-alpha.9');
 
   const configService = app.get<ConfigService>(ConfigService);