diff --git a/packages/models-library/tests/test_projects_state.py b/packages/models-library/tests/test_projects_state.py
index a5e7f5ce7ea..08493f9f3b1 100644
--- a/packages/models-library/tests/test_projects_state.py
+++ b/packages/models-library/tests/test_projects_state.py
@@ -9,7 +9,7 @@ def test_project_locked_with_missing_owner_raises():
 
 
 def test_project_locked_with_missing_owner_ok_during_maintaining():
-    ProjectLocked.parse_obj({"value": True, "status": ProjectStatus.MAINTAINING})
+    ProjectLocked.model_validate({"value": True, "status": ProjectStatus.MAINTAINING})
 
 
 @pytest.mark.parametrize(
diff --git a/services/web/server/tests/unit/with_dbs/03/test_trash.py b/services/web/server/tests/unit/with_dbs/03/test_trash.py
index 7d6c701c522..16a5f9dc147 100644
--- a/services/web/server/tests/unit/with_dbs/03/test_trash.py
+++ b/services/web/server/tests/unit/with_dbs/03/test_trash.py
@@ -103,7 +103,7 @@ async def test_trash_projects(  # noqa: PLR0915
     resp = await client.get("/v0/projects")
     await assert_status(resp, status.HTTP_200_OK)
 
-    page = Page[ProjectListItem].parse_obj(await resp.json())
+    page = Page[ProjectListItem].model_validate(await resp.json())
     assert page.meta.total == 1
 
     got = page.data[0]
@@ -114,7 +114,7 @@ async def test_trash_projects(  # noqa: PLR0915
     resp = await client.get("/v0/projects", params={"filters": '{"trashed": true}'})
     await assert_status(resp, status.HTTP_200_OK)
 
-    page = Page[ProjectListItem].parse_obj(await resp.json())
+    page = Page[ProjectListItem].model_validate(await resp.json())
     assert page.meta.total == 0
 
     # TRASH
@@ -138,7 +138,7 @@ async def test_trash_projects(  # noqa: PLR0915
     # GET
     resp = await client.get(f"/v0/projects/{project_uuid}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = ProjectGet.parse_obj(data)
+    got = ProjectGet.model_validate(data)
     assert got.uuid == project_uuid
 
     if could_not_trash:
@@ -152,7 +152,7 @@ async def test_trash_projects(  # noqa: PLR0915
     resp = await client.get("/v0/projects", params={"filters": '{"trashed": true}'})
     await assert_status(resp, status.HTTP_200_OK)
 
-    page = Page[ProjectListItem].parse_obj(await resp.json())
+    page = Page[ProjectListItem].model_validate(await resp.json())
     if could_not_trash:
         assert page.meta.total == 0
     else:
@@ -166,7 +166,7 @@ async def test_trash_projects(  # noqa: PLR0915
         # GET
         resp = await client.get(f"/v0/projects/{project_uuid}")
         data, _ = await assert_status(resp, status.HTTP_200_OK)
-        got = ProjectGet.parse_obj(data)
+        got = ProjectGet.model_validate(data)
 
         assert got.uuid == project_uuid
         assert got.trashed_at is None
@@ -187,7 +187,7 @@ async def test_trash_single_folder(client: TestClient, logged_user: UserInfoDict
     # CREATE a folder
     resp = await client.post("/v0/folders", json={"name": "My first folder"})
     data, _ = await assert_status(resp, status.HTTP_201_CREATED)
-    folder = FolderGet.parse_obj(data)
+    folder = FolderGet.model_validate(data)
 
     # ---------------------------------------------------------------------
 
@@ -195,7 +195,7 @@ async def test_trash_single_folder(client: TestClient, logged_user: UserInfoDict
     resp = await client.get("/v0/folders")
     await assert_status(resp, status.HTTP_200_OK)
 
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 1
 
     assert page.data[0] == folder
@@ -204,7 +204,7 @@ async def test_trash_single_folder(client: TestClient, logged_user: UserInfoDict
     resp = await client.get("/v0/folders", params={"filters": '{"trashed": true}'})
     await assert_status(resp, status.HTTP_200_OK)
 
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 0
 
     # TRASH
@@ -222,7 +222,7 @@ async def test_trash_single_folder(client: TestClient, logged_user: UserInfoDict
     # GET
     resp = await client.get(f"/v0/folders/{folder.folder_id}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = FolderGet.parse_obj(data)
+    got = FolderGet.model_validate(data)
     assert got.folder_id == folder.folder_id
 
     assert got.trashed_at
@@ -233,7 +233,7 @@ async def test_trash_single_folder(client: TestClient, logged_user: UserInfoDict
     resp = await client.get("/v0/folders", params={"filters": '{"trashed": true}'})
     await assert_status(resp, status.HTTP_200_OK)
 
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
 
     assert page.meta.total == 1
     assert page.data[0].folder_id == folder.folder_id
@@ -249,7 +249,7 @@ async def test_trash_single_folder(client: TestClient, logged_user: UserInfoDict
     # GET
     resp = await client.get(f"/v0/folders/{folder.folder_id}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = FolderGet.parse_obj(data)
+    got = FolderGet.model_validate(data)
 
     assert got.folder_id == folder.folder_id
     assert got.trashed_at is None
@@ -271,7 +271,7 @@ async def test_trash_folder_with_content(
     # CREATE a folder
     resp = await client.post("/v0/folders", json={"name": "My first folder"})
     data, _ = await assert_status(resp, status.HTTP_201_CREATED)
-    folder = FolderGet.parse_obj(data)
+    folder = FolderGet.model_validate(data)
 
     # CREATE a SUB-folder
     resp = await client.post(
@@ -279,7 +279,7 @@ async def test_trash_folder_with_content(
         json={"name": "My subfolder 1", "parentFolderId": folder.folder_id},
     )
     data, _ = await assert_status(resp, status.HTTP_201_CREATED)
-    subfolder = FolderGet.parse_obj(data)
+    subfolder = FolderGet.model_validate(data)
 
     # MOVE project to SUB-folder
     resp = await client.put(
@@ -290,13 +290,13 @@ async def test_trash_folder_with_content(
     # CHECK created
     resp = await client.get("/v0/folders")
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 1
     assert page.data[0] == folder
 
     resp = await client.get("/v0/folders", params={"folder_id": f"{folder.folder_id}"})
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 1
     assert page.data[0] == subfolder
 
@@ -304,7 +304,7 @@ async def test_trash_folder_with_content(
         "/v0/projects", params={"folder_id": f"{subfolder.folder_id}"}
     )
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[ProjectListItem].parse_obj(await resp.json())
+    page = Page[ProjectListItem].model_validate(await resp.json())
     assert page.meta.total == 1
     assert page.data[0].uuid == project_uuid
     assert page.data[0].folder_id == subfolder.folder_id
@@ -318,7 +318,7 @@ async def test_trash_folder_with_content(
     # ONLY folder listed in trash. The rest is not listed anymore!
     resp = await client.get("/v0/folders", params={"filters": '{"trashed": true}'})
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 1
     assert page.data[0].folder_id == folder.folder_id
 
@@ -327,7 +327,7 @@ async def test_trash_folder_with_content(
         params={"filters": '{"trashed": true}', "folder_id": f"{folder.folder_id}"},
     )
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 0
 
     resp = await client.get(
@@ -335,23 +335,23 @@ async def test_trash_folder_with_content(
         params={"filters": '{"trashed": true}', "folder_id": f"{subfolder.folder_id}"},
     )
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[ProjectListItem].parse_obj(await resp.json())
+    page = Page[ProjectListItem].model_validate(await resp.json())
     assert page.meta.total == 0
 
     # CHECK marked as trashed
     resp = await client.get(f"/v0/folders/{folder.folder_id}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = FolderGet.parse_obj(data)
+    got = FolderGet.model_validate(data)
     assert got.trashed_at is not None
 
     resp = await client.get(f"/v0/folders/{subfolder.folder_id}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = FolderGet.parse_obj(data)
+    got = FolderGet.model_validate(data)
     assert got.trashed_at is not None
 
     resp = await client.get(f"/v0/projects/{project_uuid}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = ProjectGet.parse_obj(data)
+    got = ProjectGet.model_validate(data)
     assert got.trashed_at is not None
 
     # UNTRASH folder
@@ -361,7 +361,7 @@ async def test_trash_folder_with_content(
     # NO folders listed in trash.
     resp = await client.get("/v0/folders", params={"filters": '{"trashed": true}'})
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 0
 
     resp = await client.get(
@@ -369,7 +369,7 @@ async def test_trash_folder_with_content(
         params={"filters": '{"trashed": true}', "folder_id": f"{folder.folder_id}"},
     )
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[FolderGet].parse_obj(await resp.json())
+    page = Page[FolderGet].model_validate(await resp.json())
     assert page.meta.total == 0
 
     resp = await client.get(
@@ -377,21 +377,21 @@ async def test_trash_folder_with_content(
         params={"filters": '{"trashed": true}', "folder_id": f"{subfolder.folder_id}"},
     )
     await assert_status(resp, status.HTTP_200_OK)
-    page = Page[ProjectListItem].parse_obj(await resp.json())
+    page = Page[ProjectListItem].model_validate(await resp.json())
     assert page.meta.total == 0
 
     # CHECK marked as trashed
     resp = await client.get(f"/v0/folders/{folder.folder_id}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = FolderGet.parse_obj(data)
+    got = FolderGet.model_validate(data)
     assert got.trashed_at is None
 
     resp = await client.get(f"/v0/folders/{subfolder.folder_id}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = FolderGet.parse_obj(data)
+    got = FolderGet.model_validate(data)
     assert got.trashed_at is None
 
     resp = await client.get(f"/v0/projects/{project_uuid}")
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    got = ProjectGet.parse_obj(data)
+    got = ProjectGet.model_validate(data)
     assert got.trashed_at is None
diff --git a/services/web/server/tests/unit/with_dbs/04/folders/test_folders__full_search.py b/services/web/server/tests/unit/with_dbs/04/folders/test_folders__full_search.py
index 74126da042f..e9bde5d9ec5 100644
--- a/services/web/server/tests/unit/with_dbs/04/folders/test_folders__full_search.py
+++ b/services/web/server/tests/unit/with_dbs/04/folders/test_folders__full_search.py
@@ -95,7 +95,7 @@ async def test_folders_full_search(
         },
     )
     data, _ = await assert_status(resp, status.HTTP_200_OK)
-    assert FolderGet.parse_obj(data)
+    assert FolderGet.model_validate(data)
 
     # list full folder search
     url = client.app.router["list_folders_full_search"].url_for()