diff --git a/services/postgresflex/oas_commit b/services/postgresflex/oas_commit
index e05d493f3..77bad3ba6 100644
--- a/services/postgresflex/oas_commit
+++ b/services/postgresflex/oas_commit
@@ -1 +1 @@
-da4701b7dbe20e984aef89711bb9ba716e19fcba
+7ef816d0b66577a45f96dc95258adf805ca5b005
diff --git a/services/postgresflex/src/stackit/postgresflex/models/create_database_payload.py b/services/postgresflex/src/stackit/postgresflex/models/create_database_payload.py
index 4229b1b9b..7ab4b83d3 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/create_database_payload.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/create_database_payload.py
@@ -16,11 +16,12 @@
 
 import json
 import pprint
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, StrictStr
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from pydantic_core import to_jsonable_python
-from typing_extensions import Self
+from typing_extensions import Annotated, Self
 
 
 class CreateDatabasePayload(BaseModel):
@@ -28,10 +29,22 @@ class CreateDatabasePayload(BaseModel):
     CreateDatabasePayload
     """  # noqa: E501
 
-    name: StrictStr = Field(description="The name of the database.")
+    name: Annotated[str, Field(min_length=1, strict=True, max_length=63)] = Field(
+        description='"The name of the database." "Database name must be 1–63 characters long, start with a lowercase letter or underscore, and contain only lowercase letters, numbers, or underscores." '
+    )
     owner: Optional[StrictStr] = Field(default=None, description="The owner of the database.")
     __properties: ClassVar[List[str]] = ["name", "owner"]
 
+    @field_validator("name")
+    def name_validate_regular_expression(cls, value):
+        """Validates the regular expression"""
+        if not isinstance(value, str):
+            value = str(value)
+
+        if not re.match(r"^[a-z_][a-z0-9_]*$", value):
+            raise ValueError(r"must validate the regular expression /^[a-z_][a-z0-9_]*$/")
+        return value
+
     model_config = ConfigDict(
         validate_by_name=True,
         validate_by_alias=True,
diff --git a/services/postgresflex/src/stackit/postgresflex/models/database_roles.py b/services/postgresflex/src/stackit/postgresflex/models/database_roles.py
index a3398b631..549900d90 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/database_roles.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/database_roles.py
@@ -16,11 +16,12 @@
 
 import json
 import pprint
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, StrictStr
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from pydantic_core import to_jsonable_python
-from typing_extensions import Self
+from typing_extensions import Annotated, Self
 
 
 class DatabaseRoles(BaseModel):
@@ -28,10 +29,22 @@ class DatabaseRoles(BaseModel):
     The name and the roles for a database for a user.
     """  # noqa: E501
 
-    name: StrictStr = Field(description="The name of the database.")
+    name: Annotated[str, Field(min_length=1, strict=True, max_length=63)] = Field(
+        description='"The name of the database." "Database name must be 1–63 characters long, start with a lowercase letter or underscore, and contain only lowercase letters, numbers, or underscores." '
+    )
     roles: List[StrictStr] = Field(description="The name and the roles for a database")
     __properties: ClassVar[List[str]] = ["name", "roles"]
 
+    @field_validator("name")
+    def name_validate_regular_expression(cls, value):
+        """Validates the regular expression"""
+        if not isinstance(value, str):
+            value = str(value)
+
+        if not re.match(r"^[a-z_][a-z0-9_]*$", value):
+            raise ValueError(r"must validate the regular expression /^[a-z_][a-z0-9_]*$/")
+        return value
+
     model_config = ConfigDict(
         validate_by_name=True,
         validate_by_alias=True,
diff --git a/services/postgresflex/src/stackit/postgresflex/models/get_database_response.py b/services/postgresflex/src/stackit/postgresflex/models/get_database_response.py
index 7e04ec741..9a3dbac2f 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/get_database_response.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/get_database_response.py
@@ -16,11 +16,12 @@
 
 import json
 import pprint
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, StrictInt, StrictStr
+from pydantic import BaseModel, ConfigDict, Field, StrictInt, StrictStr, field_validator
 from pydantic_core import to_jsonable_python
-from typing_extensions import Self
+from typing_extensions import Annotated, Self
 
 
 class GetDatabaseResponse(BaseModel):
@@ -29,10 +30,22 @@ class GetDatabaseResponse(BaseModel):
     """  # noqa: E501
 
     id: StrictInt = Field(description="The id of the database.")
-    name: StrictStr = Field(description="The name of the database.")
+    name: Annotated[str, Field(min_length=1, strict=True, max_length=63)] = Field(
+        description='"The name of the database." "Database name must be 1–63 characters long, start with a lowercase letter or underscore, and contain only lowercase letters, numbers, or underscores." '
+    )
     owner: StrictStr = Field(description="The owner of the database.")
     __properties: ClassVar[List[str]] = ["id", "name", "owner"]
 
+    @field_validator("name")
+    def name_validate_regular_expression(cls, value):
+        """Validates the regular expression"""
+        if not isinstance(value, str):
+            value = str(value)
+
+        if not re.match(r"^[a-z_][a-z0-9_]*$", value):
+            raise ValueError(r"must validate the regular expression /^[a-z_][a-z0-9_]*$/")
+        return value
+
     model_config = ConfigDict(
         validate_by_name=True,
         validate_by_alias=True,
diff --git a/services/postgresflex/src/stackit/postgresflex/models/instance_network_access_scope.py b/services/postgresflex/src/stackit/postgresflex/models/instance_network_access_scope.py
index 5e28a9cd1..f8a956a89 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/instance_network_access_scope.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/instance_network_access_scope.py
@@ -22,7 +22,7 @@
 
 class InstanceNetworkAccessScope(str, Enum):
     """
-    The access scope of the instance. It defines if the instance is public or airgapped.
+    The access scope of the instance. It defines if the instance is public or airgapped.  ⚠️ **Note:** \"SNA\" value for the \"network.accessScope\" field is only permitted for enabled accounts. If your account does not have access, the request will be rejected.
     """
 
     """
diff --git a/services/postgresflex/src/stackit/postgresflex/models/list_database.py b/services/postgresflex/src/stackit/postgresflex/models/list_database.py
index d6224ae3d..e52794197 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/list_database.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/list_database.py
@@ -16,11 +16,12 @@
 
 import json
 import pprint
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, StrictInt, StrictStr
+from pydantic import BaseModel, ConfigDict, Field, StrictInt, StrictStr, field_validator
 from pydantic_core import to_jsonable_python
-from typing_extensions import Self
+from typing_extensions import Annotated, Self
 
 
 class ListDatabase(BaseModel):
@@ -29,10 +30,22 @@ class ListDatabase(BaseModel):
     """  # noqa: E501
 
     id: StrictInt = Field(description="The id of the database.")
-    name: StrictStr = Field(description="The name of the database.")
+    name: Annotated[str, Field(min_length=1, strict=True, max_length=63)] = Field(
+        description='"The name of the database." "Database name must be 1–63 characters long, start with a lowercase letter or underscore, and contain only lowercase letters, numbers, or underscores." '
+    )
     owner: StrictStr = Field(description="The owner of the database.")
     __properties: ClassVar[List[str]] = ["id", "name", "owner"]
 
+    @field_validator("name")
+    def name_validate_regular_expression(cls, value):
+        """Validates the regular expression"""
+        if not isinstance(value, str):
+            value = str(value)
+
+        if not re.match(r"^[a-z_][a-z0-9_]*$", value):
+            raise ValueError(r"must validate the regular expression /^[a-z_][a-z0-9_]*$/")
+        return value
+
     model_config = ConfigDict(
         validate_by_name=True,
         validate_by_alias=True,
diff --git a/services/postgresflex/src/stackit/postgresflex/models/partial_update_database_payload.py b/services/postgresflex/src/stackit/postgresflex/models/partial_update_database_payload.py
index 84077dd5d..b04d0aa64 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/partial_update_database_payload.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/partial_update_database_payload.py
@@ -16,11 +16,12 @@
 
 import json
 import pprint
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, StrictStr
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from pydantic_core import to_jsonable_python
-from typing_extensions import Self
+from typing_extensions import Annotated, Self
 
 
 class PartialUpdateDatabasePayload(BaseModel):
@@ -28,10 +29,26 @@ class PartialUpdateDatabasePayload(BaseModel):
     PartialUpdateDatabasePayload
     """  # noqa: E501
 
-    name: Optional[StrictStr] = Field(default=None, description="The name of the database.")
+    name: Optional[Annotated[str, Field(min_length=1, strict=True, max_length=63)]] = Field(
+        default=None,
+        description='"The name of the database." "Database name must be 1–63 characters long, start with a lowercase letter or underscore, and contain only lowercase letters, numbers, or underscores." ',
+    )
     owner: Optional[StrictStr] = Field(default=None, description="The owner of the database.")
     __properties: ClassVar[List[str]] = ["name", "owner"]
 
+    @field_validator("name")
+    def name_validate_regular_expression(cls, value):
+        """Validates the regular expression"""
+        if value is None:
+            return value
+
+        if not isinstance(value, str):
+            value = str(value)
+
+        if not re.match(r"^[a-z_][a-z0-9_]*$", value):
+            raise ValueError(r"must validate the regular expression /^[a-z_][a-z0-9_]*$/")
+        return value
+
     model_config = ConfigDict(
         validate_by_name=True,
         validate_by_alias=True,
diff --git a/services/postgresflex/src/stackit/postgresflex/models/update_database_payload.py b/services/postgresflex/src/stackit/postgresflex/models/update_database_payload.py
index f0dd46873..cb662b742 100644
--- a/services/postgresflex/src/stackit/postgresflex/models/update_database_payload.py
+++ b/services/postgresflex/src/stackit/postgresflex/models/update_database_payload.py
@@ -16,11 +16,12 @@
 
 import json
 import pprint
+import re  # noqa: F401
 from typing import Any, ClassVar, Dict, List, Optional, Set
 
-from pydantic import BaseModel, ConfigDict, Field, StrictStr
+from pydantic import BaseModel, ConfigDict, Field, StrictStr, field_validator
 from pydantic_core import to_jsonable_python
-from typing_extensions import Self
+from typing_extensions import Annotated, Self
 
 
 class UpdateDatabasePayload(BaseModel):
@@ -28,10 +29,22 @@ class UpdateDatabasePayload(BaseModel):
     UpdateDatabasePayload
     """  # noqa: E501
 
-    name: StrictStr = Field(description="The name of the database.")
+    name: Annotated[str, Field(min_length=1, strict=True, max_length=63)] = Field(
+        description='"The name of the database." "Database name must be 1–63 characters long, start with a lowercase letter or underscore, and contain only lowercase letters, numbers, or underscores." '
+    )
     owner: StrictStr = Field(description="The owner of the database.")
     __properties: ClassVar[List[str]] = ["name", "owner"]
 
+    @field_validator("name")
+    def name_validate_regular_expression(cls, value):
+        """Validates the regular expression"""
+        if not isinstance(value, str):
+            value = str(value)
+
+        if not re.match(r"^[a-z_][a-z0-9_]*$", value):
+            raise ValueError(r"must validate the regular expression /^[a-z_][a-z0-9_]*$/")
+        return value
+
     model_config = ConfigDict(
         validate_by_name=True,
         validate_by_alias=True,