diff --git a/runner_manager/models/runner_group.py b/runner_manager/models/runner_group.py
index ed210d19..e34d939c 100644
--- a/runner_manager/models/runner_group.py
+++ b/runner_manager/models/runner_group.py
@@ -19,6 +19,7 @@
 from runner_manager.backend.base import BaseBackend
 from runner_manager.backend.docker import DockerBackend
 from runner_manager.backend.gcloud import GCPBackend
+from runner_manager.backend.vsphere import VsphereBackend
 from runner_manager.clients.github import GitHub
 from runner_manager.clients.github import RunnerGroup as GitHubRunnerGroup
 from runner_manager.models.base import BaseModel
@@ -46,7 +47,7 @@ class BaseRunnerGroup(PydanticBaseModel):
     labels: List[str]
 
     backend: Annotated[
-        Union[BaseBackend, DockerBackend, GCPBackend, AWSBackend],
+        Union[BaseBackend, DockerBackend, GCPBackend, AWSBackend, VsphereBackend],
         PydanticField(..., discriminator="name"),
     ]