diff --git a/agentplatform/_genai/types/__init__.py b/agentplatform/_genai/types/__init__.py
index 667ce0b282..c9a82ea4ed 100644
--- a/agentplatform/_genai/types/__init__.py
+++ b/agentplatform/_genai/types/__init__.py
@@ -1968,6 +1968,7 @@
 from .common import SandboxEnvironmentTemplateResourceRequirements
 from .common import SandboxEnvironmentTemplateResourceRequirementsDict
 from .common import SandboxEnvironmentTemplateResourceRequirementsOrDict
+from .common import SandboxEnvironmentTemplateState
 from .common import SandboxState
 from .common import SavedQuery
 from .common import SavedQueryDict
@@ -4309,6 +4310,7 @@
     "Protocol",
     "DefaultContainerCategory",
     "PscAutomationState",
+    "SandboxEnvironmentTemplateState",
     "PostSnapshotAction",
     "Framework",
     "SkillSource",
diff --git a/agentplatform/_genai/types/common.py b/agentplatform/_genai/types/common.py
index 0eb2e58739..dd669429d8 100644
--- a/agentplatform/_genai/types/common.py
+++ b/agentplatform/_genai/types/common.py
@@ -359,6 +359,23 @@ class PscAutomationState(_common.CaseInSensitiveEnum):
     """The PSC service automation has failed."""
 
 
+class SandboxEnvironmentTemplateState(_common.CaseInSensitiveEnum):
+    """Output only. The state of the sandbox environment template."""
+
+    UNSPECIFIED = "UNSPECIFIED"
+    """The default value. This value is unused."""
+    PROVISIONING = "PROVISIONING"
+    """Runtime resources are being allocated for the sandbox environment."""
+    ACTIVE = "ACTIVE"
+    """Sandbox runtime is ready for serving."""
+    DEPROVISIONING = "DEPROVISIONING"
+    """Sandbox runtime is halted, performing tear down tasks."""
+    DELETED = "DELETED"
+    """Sandbox has terminated with underlying runtime failure."""
+    FAILED = "FAILED"
+    """Sandbox has failed to provision."""
+
+
 class PostSnapshotAction(_common.CaseInSensitiveEnum):
     """Input only. Action to take on the source SandboxEnvironment after the snapshot is taken. This field is only used in CreateSandboxEnvironmentSnapshotRequest and it is not stored in the resource."""
 
@@ -17838,16 +17855,7 @@ class SandboxEnvironmentTemplate(_common.BaseModel):
         default=None,
         description="""Identifier. The resource name of the SandboxEnvironmentTemplate. Format: `projects/{project}/locations/{location}/reasoningEngines/{reasoning_engine}/sandboxEnvironmentTemplates/{sandbox_environment_template}`""",
     )
-    state: Optional[
-        Literal[
-            "UNSPECIFIED",
-            "PROVISIONING",
-            "ACTIVE",
-            "DEPROVISIONING",
-            "DELETED",
-            "FAILED",
-        ]
-    ] = Field(
+    state: Optional[SandboxEnvironmentTemplateState] = Field(
         default=None,
         description="""Output only. The state of the sandbox environment template.""",
     )
@@ -17886,16 +17894,7 @@ class SandboxEnvironmentTemplateDict(TypedDict, total=False):
     name: Optional[str]
     """Identifier. The resource name of the SandboxEnvironmentTemplate. Format: `projects/{project}/locations/{location}/reasoningEngines/{reasoning_engine}/sandboxEnvironmentTemplates/{sandbox_environment_template}`"""
 
-    state: Optional[
-        Literal[
-            "UNSPECIFIED",
-            "PROVISIONING",
-            "ACTIVE",
-            "DEPROVISIONING",
-            "DELETED",
-            "FAILED",
-        ]
-    ]
+    state: Optional[SandboxEnvironmentTemplateState]
     """Output only. The state of the sandbox environment template."""
 
     update_time: Optional[datetime.datetime]