diff --git a/backend/capellacollab/alembic/versions/f7bf9456cfc9_add_archive_flag.py b/backend/capellacollab/alembic/versions/f7bf9456cfc9_add_archive_flag.py
new file mode 100644
index 0000000000..0cac1e9f15
--- /dev/null
+++ b/backend/capellacollab/alembic/versions/f7bf9456cfc9_add_archive_flag.py
@@ -0,0 +1,35 @@
+# SPDX-FileCopyrightText: Copyright DB Netz AG and the capella-collab-manager contributors
+# SPDX-License-Identifier: Apache-2.0
+
+"""Add archive flag
+
+Revision ID: f7bf9456cfc9
+Revises: 1a4208c18909
+Create Date: 2023-08-28 08:57:22.931913
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = "f7bf9456cfc9"
+down_revision = "1a4208c18909"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column(
+        "t4c_instances", sa.Column("is_archived", sa.Boolean(), nullable=True)
+    )
+
+    op.get_bind().execute(
+        sa.text("UPDATE t4c_instances SET is_archived=false")
+    )
+
+    op.alter_column(
+        "t4c_instances",
+        "is_archived",
+        existing_type=sa.BOOLEAN(),
+        nullable=False,
+    )
diff --git a/backend/capellacollab/settings/modelsources/t4c/models.py b/backend/capellacollab/settings/modelsources/t4c/models.py
index d89ae1458b..fc9ff63f14 100644
--- a/backend/capellacollab/settings/modelsources/t4c/models.py
+++ b/backend/capellacollab/settings/modelsources/t4c/models.py
@@ -79,6 +79,8 @@ class DatabaseT4CInstance(database.Base):
         back_populates="instance", cascade="all, delete"
     )
 
+    is_archived: orm.Mapped[bool] = orm.mapped_column(default=False)
+
 
 def port_validator(value: int | None) -> int | None:
     if not value:
@@ -123,6 +125,7 @@ class PatchT4CInstance(pydantic.BaseModel):
     password: str | None = None
     protocol: Protocol | None = None
     version_id: int | None = None
+    is_archived: bool | None = None
 
     _validate_rest_api_url = pydantic.field_validator("rest_api")(
         validate_rest_api_url
@@ -138,9 +141,11 @@ class T4CInstanceComplete(T4CInstanceBase):
 
 
 class CreateT4CInstance(T4CInstanceComplete):
+    is_archived: bool | None = None
     password: str
 
 
 class T4CInstance(T4CInstanceComplete):
     id: int
     version: tools_models.ToolVersionBase
+    is_archived: bool
diff --git a/frontend/src/app/services/settings/t4c-instance.service.ts b/frontend/src/app/services/settings/t4c-instance.service.ts
index 547fd4e94b..5c2588c9fa 100644
--- a/frontend/src/app/services/settings/t4c-instance.service.ts
+++ b/frontend/src/app/services/settings/t4c-instance.service.ts
@@ -22,6 +22,7 @@ export type BaseT4CInstance = {
   username: string;
   password: string;
   protocol: Protocol;
+  is_archived: boolean;
 };
 
 export type NewT4CInstance = BaseT4CInstance & {