apache/airflow

Deprecated airflow.utils.timezone import in SFTPSensor triggers warnings with Airflow 3.x

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#65,419 opened on Apr 17, 2026

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area:providersgood first issuekind:bugprovider:sftp

Description

Under which category would you file this issue?

Providers

Apache Airflow version

3.1.8

What happened and how to reproduce it?

Summary

Importing SFTPSensor (from apache-airflow-providers-sftp) on Airflow 3.1.8 with Python 3.11 causes DeprecatedImportWarning due to usage of airflow.utils.timezone in SFTP provider code.

Current Behavior

On importing or using SFTPSensor, log shows:

[2026-04-17 18:35:28] INFO - Filling up the DagBag from /mnt/local/airflow/dagcodes/dags/utility/test.py
[2026-04-17 18:35:28] WARNING - The airflow.utils.timezone.convert_to_utc attribute is deprecated. Please use 'airflow.sdk.timezone.convert_to_utc'. category=DeprecatedImportWarning
[2026-04-17 18:35:28] WARNING - The airflow.utils.timezone.convert_to_utc attribute is deprecated. Please use 'airflow.sdk.timezone.convert_to_utc'. category=DeprecatedImportWarning
[2026-04-17 18:35:28] WARNING - The airflow.utils.timezone.parse attribute is deprecated. Please use 'airflow.sdk.timezone.parse'. category=DeprecatedImportWarning

Reproduction Steps

  1. Airflow version: 3.1.8
  2. Python version: 3.11
  3. Executor/environment: Celery
  4. Minimal DAG:
from datetime import datetime

from airflow.sdk import DAG
from airflow.providers.sftp.sensors.sftp import SFTPSensor

with DAG(
    dag_id="repro_sftp_timezone_warning",
    start_date=datetime(2024, 1, 1),
    schedule=None,
    catchup=False,
):
    SFTPSensor(
        task_id="wait_for_file",
        path="/tmp/somefile.txt",
        sftp_conn_id="sftp_default",
    )

Analysis

providers/sftp/src/airflow/providers/sftp/sensors/sftp.py imports deprecated timezone path. Link: sftp.py Same behavior observed in provider releases including apache-airflow-providers-sftp==5.7.0 and 5.7.3. Link: sftp_5.7.3.py

What you think should happen instead?

No DeprecatedImportWarning should be emitted from provider internals on Airflow 3.x. Replace deprecated airflow.utils.timezone imports/usages with airflow.sdk.timezone in SFTP provider sensor(s).

Operating System

No response

Deployment

Docker-Compose

Apache Airflow Provider(s)

sftp

Versions of Apache Airflow Providers

apache-airflow-providers-sftp 5.7.0

Official Helm Chart version

Not Applicable

Kubernetes Version

No response

Helm Chart configuration

No response

Docker Image customizations

No response

Anything else?

No response

Are you willing to submit PR?

  • Yes I am willing to submit a PR!

Code of Conduct

Contributor guide

Tech stack
python
Domain
backend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
None
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
90
Research direction
The issue is localized to one file: providers/sftp/src/airflow/providers/sftp/sensors/sftp.py. At line 32, the import from airflow.utils.timezone should be replaced with airflow.sdk.timezone. Check for any other occurrences of deprecated imports in the same file or other SFTP provider files. No additional research is needed beyond the file mentioned.