diff --git a/packages/common/nbstore/src/impls/cloud/blob.ts b/packages/common/nbstore/src/impls/cloud/blob.ts
index 671687d75ced1..6bccdfea2db62 100644
--- a/packages/common/nbstore/src/impls/cloud/blob.ts
+++ b/packages/common/nbstore/src/impls/cloud/blob.ts
@@ -16,7 +16,12 @@ export class CloudBlobStorage extends BlobStorage {
   override async get(key: string) {
     const res = await fetch(
       this.options.peer + '/api/workspaces/' + this.spaceId + '/blobs/' + key,
-      { cache: 'default' }
+      {
+        cache: 'default',
+        headers: {
+          'x-affine-version': BUILD_CONFIG.appVersion,
+        },
+      }
     );
 
     if (!res.ok) {
diff --git a/packages/frontend/core/src/modules/cloud/services/fetch.ts b/packages/frontend/core/src/modules/cloud/services/fetch.ts
index b989e629adc2c..668b25c6e1ec9 100644
--- a/packages/frontend/core/src/modules/cloud/services/fetch.ts
+++ b/packages/frontend/core/src/modules/cloud/services/fetch.ts
@@ -54,6 +54,10 @@ export class FetchService extends Service {
       .fetch(new URL(input, this.serverService.server.serverMetadata.baseUrl), {
         ...init,
         signal: abortController.signal,
+        headers: {
+          ...init?.headers,
+          'x-affine-version': BUILD_CONFIG.appVersion,
+        },
       })
       .catch(err => {
         logger.debug('network error', err);