PostgreSQL 19 will arrive later than planned. The open-source database project has moved its release date to November 19, 2026, after developers found and corrected so many issues in previous versions that they chose to include the fixes in one final test release first.
The delay follows the removal of several planned features, including the ability to query graph-shaped data. Peter Eisentraut, a member of PostgreSQL’s leadership team, linked some of those late changes to AI-assisted code review, which is identifying anomalies at an unprecedented pace. He said the project was dealing with around 40 bug reports, each requiring unavoidable time to assess and fix even when the resulting patch was small.
In a post published on October 30, major PostgreSQL contributor Robert Haas described the broader change directly: large language models have arrived. According to Haas, these systems are finding vulnerabilities that human code reviews had not uncovered over decades, but they have not removed the main constraint. Human maintainers must still understand each report, verify the proposed correction, adapt it to the project’s standards and integrate it.
Data cited by Haas illustrates the increased workload. Between April 8 and September 25, the number of changes submitted to the development version rose from 724 in 2025 to 1,169 in 2026, an increase of 61%. Changes affecting both the development version and the previous production version increased from 248 to 433, or 75%.
Haas attributed much of that growth to more people reporting bugs found with large language models, rather than to contributors making substantially more mistakes. Time spent handling those reports, including security fixes, reduced the capacity available for PostgreSQL 19 and contributed to the decision to drop some features.
The project has also recorded more security-related fixes overall. A release on August 13 corrected 28 such issues, compared with 11 in May. However, the available figures do not show how many of those problems were discovered with AI assistance.
Haas described the current delay as modest but expressed concern about the longer-term impact on PostgreSQL’s ability to innovate. The project must deal with genuine bugs in larger numbers while relying on the same human resources to validate and implement the fixes.
PostgreSQL’s next scheduled milestone is November 12, when the project plans to publish an update containing numerous corrections and a final test version of PostgreSQL 19. If no further problems emerge, the stable release is expected to follow on November 19.
Sources: Numerama.