diff --git a/plugins/scaffolder-backend-module-gcp/config.d.ts b/plugins/scaffolder-backend-module-gcp/config.d.ts
new file mode 100644
index 0000000000..acd3eebdd9
--- /dev/null
+++ b/plugins/scaffolder-backend-module-gcp/config.d.ts
@@ -0,0 +1,25 @@
+/*
+ * Copyright 2020 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+export interface Config {
+  /** Configuration options for the scaffolder plugin */
+  scaffolder?: {
+    /**
+     * Sets GCP bucket name to store serialized workspace for scaffolder tasks.
+     */
+    EXPERIMENTAL_workspaceSerializationGcpBucketName?: string;
+  };
+}
diff --git a/plugins/scaffolder-backend-module-gcp/package.json b/plugins/scaffolder-backend-module-gcp/package.json
index 9cb86801ef..9d5efa2891 100644
--- a/plugins/scaffolder-backend-module-gcp/package.json
+++ b/plugins/scaffolder-backend-module-gcp/package.json
@@ -30,7 +30,8 @@
     }
   },
   "files": [
-    "dist"
+    "dist",
+    "config.d.ts"
   ],
   "scripts": {
     "build": "backstage-cli package build",
diff --git a/plugins/scaffolder-backend-module-gcp/src/providers/GcpBucketWorkspaceProvider.ts b/plugins/scaffolder-backend-module-gcp/src/providers/GcpBucketWorkspaceProvider.ts
index 5afa267041..cd2beb2073 100644
--- a/plugins/scaffolder-backend-module-gcp/src/providers/GcpBucketWorkspaceProvider.ts
+++ b/plugins/scaffolder-backend-module-gcp/src/providers/GcpBucketWorkspaceProvider.ts
@@ -87,11 +87,11 @@ export class GcpBucketWorkspaceProvider implements WorkspaceProvider {
 
   private getGcpBucketName(): string {
     const bucketName = this.config?.getOptionalString(
-      'scaffolder.EXPERIMENTAL_gcpBucketName',
+      'scaffolder.EXPERIMENTAL_workspaceSerializationGcpBucketName',
     );
     if (!bucketName) {
       throw new Error(
-        `You've missed to configure scaffolder.EXPERIMENTAL_gcpBucketName in app-config.yaml file`,
+        `You've missed to configure scaffolder.EXPERIMENTAL_workspaceSerializationGcpBucketName in app-config.yaml file`,
       );
     }
     return bucketName;