# DuckDB v1.5.3 — Release & Upgrade Intelligence
- **Product:** DuckDB (https://duckdb.org)
- **Version:** v1.5.3
- **Released:** May 20, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/duckdb/updates/v1.5.3/

## Executive Summary (TL;DR)
DuckDB v1.5.3. Source highlight: This is a bugfix release for various issues discovered after we released v1.5.2.

## New Features
- Add iceberg copy function autoload
- Add `DISABLE_BUILTIN_HTTPLIB` option
- Set `query` field for statements in `ALTER TABLE ... ADD COLUMN ... DEFAULT ...` workaround
- Add support for reading `VARIANT` using C API
- Add storage informations for v1.5.3
- Add quack autoloading

## Improvements
- GetLocalFileSystem improvements

## Bug Fixes
- fix: resolve current catalog in ADBC Ingest to avoid temp table shadowing
- Fix TIMESTAMPFORMAT being ignored for TIMESTAMPTZ columns in copy to json
- Fix DISABLE_EXTENSION_LOAD
- Fix `INSERT OR REPLACE BY NAME` regression by excluding conflict columns from `SET` list
- Fix constant struct args in lateral table in-out functions
- Fix empty parquet child schema