4.3.0

• v4.3.0(February 12,2026)
  • Ensured proper list conversion - the converter runs to_snowflake on all list elements.
  • Made the parameter server_session_keep_alive in SnowflakeConnection skip checking for pending async queries, providing faster connection close times especially when many async queries are executed.
  • Fix string representation of INTERVAL YEAR and INTERVAL MONTH types.
  • Log a warning when using http protocol for OAuth urls.
  • Deprecated support for custom revocation error classes in OCSP response cache deserialization. By default, only RevocationCheckError exceptions are deserialized from OCSP cache. Custom exception classes can be temporarily enabled by setting the SNOWFLAKE_ENABLE_CUSTOM_REVOCATION_ERRORS environment variable to true or 1, but this support will be removed in a future release.
  • Bumped up vendored urllib3 to 2.6.3
  • Added force_microseconds_precision to cursor.fetch_arrow_all and cursor.fetch_pandas_all to avoid PyArrow schema incosistency between batches.

4.2.0

• v4.2.0(January 07,2026)
  • Added SnowflakeCursor.stats property to expose granular DML statistics (rows inserted, deleted, updated, and duplicates) for operations like CTAS where rowcount is insufficient.
  • Added support for injecting SPCS service identifier token (SPCS_TOKEN) into login requests when present in SPCS containers.
  • Introduced shared library for extended telemetry to identify and prepare testing platform for native rust extensions.

4.1.1

• v4.1.1(TBD)
  • Relaxed pandas dependency requirements for Python below 3.12.
  • Changed CRL cache cleanup background task to daemon to avoid blocking main thread.
  • Fixed NO_PROXY issues with PUT operations

4.1.0

• v4.1.0(November 18,2025)
  • Added the SNOWFLAKE_AUTH_FORCE_SERVER environment variable to force the use of the local-listening server when using the externalbrowser auth method.
    • This allows headless environments (like Docker or Airflow) running locally to auth via a browser URL.
  • Fix compilation error when building from sources with libc++.
  • Pin lower versions of dependencies to oldest version without vulnerabilities.
  • Added no_proxy parameter for proxy configuration without using environmental variables.
  • Added OAUTH_AUTHORIZATION_CODE and OAUTH_CLIENT_CREDENTIALS to list of authenticators that don't require user to be set
  • Added oauth_socket_uri connection parameter allowing to separate server and redirect URIs for local OAuth server.
  • Made platform_detection logs silent and improved its timeout handling. Added support for ENV_VAR_DISABLE_PLATFORM_DETECTION environment variable.
  • Fixed FIPS environments md5 hash issues with multipart upload on Azure.

4.0.0

• v4.0.0(October 09,2025)
  • Added support for checking certificates revocation using revocation lists (CRLs)
  • Added CERT_REVOCATION_CHECK_MODE to CLIENT_ENVIRONMENT
  • Added the workload_identity_impersonation_path parameter to support service account impersonation for Workload Identity Federation on GCP and AWS workloads only
  • Fixed get_results_from_sfqid when using DictCursor and executing multiple statements at once
  • Added the oauth_credentials_in_body parameter supporting an option to send the oauth client credentials in the request body
  • Fix retry behavior for ECONNRESET error
  • Added an option to exclude botocore and boto3 dependencies by setting SNOWFLAKE_NO_BOTO environment variable during installation
  • Revert changing exception type in case of token expired scenario for Oauth authenticator back to DatabaseError
  • Enhanced configuration file security checks with stricter permission validation.
    • Configuration files writable by group or others now raise a ConfigSourceError with detailed permission information, preventing potential credential tampering.
  • Fixed the return type of SnowflakeConnection.cursor(cursor_class) to match the type of cursor_class
  • Constrained the types of fetchone, fetchmany, fetchall
    • As part of this fix, DictCursor is no longer a subclass of SnowflakeCursor; use SnowflakeCursorBase as a superclass of both.
  • Fix "No AWS region was found" error if AWS region was set in AWS_DEFAULT_REGION variable instead of AWS_REGION for WORKLOAD_IDENTITY authenticator
  • Add ocsp_root_certs_dict_lock_timeout connection parameter to set the timeout (in seconds) for acquiring the lock on the OCSP root certs dictionary. Default value for this parameter is -1 which indicates no timeout.
  • Fixed behaviour of trying S3 Transfer Accelerate endpoint by default for internal stages, and always getting HTTP403 due to permissions missing on purpose. Now /accelerate is not attempted.

3.18.0

• v3.18.0(October 03,2025)
  • Added support for pandas conversion for Day-time and Year-Month Interval types

3.17.4

• v3.17.4(September 22,2025)
  • Added support for intermediate certificates as roots when they are stored in the trust store
  • Bumped up vendored urllib3 to 2.5.0 and requests to v2.32.5

3.17.3

• v3.17.3(September 02,2025)
  • Enhanced configuration file permission warning messages.
    • Improved warning messages for readable permission issues to include clear instructions on how to skip warnings using the SF_SKIP_WARNING_FOR_READ_PERMISSIONS_ON_CONFIG_FILE environment variable.
  • Fixed the bug with staging pandas dataframes on AWS - the regional endpoint is used when required
    • This addresses the issue with create_dataframe call on Snowpark

3.17.2

• v3.17.2(August 23,2025)
  • Fixed a bug where platform_detection was retrying failed requests with warnings to non-existent endpoints.
  • Added disabling endpoint-based platform detection by setting platform_detection_timeout_seconds to zero.

3.17.1

• v3.17.1(August 17,2025)
  • Added infer_schema parameter to write_pandas to perform schema inference on the passed data.
  • Namespace snowlake reverted back to non-module.