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Where Odoo 16 Leaves You in 2026
Odoo 16 was released in October 2022 and its standard support ended in 2025. It gets no bug fixes or security patches, and most current third-party apps and connectors are built for recent versions only.
Odoo 19, released in September 2025, is supported until September 2028 (planned). Three releases sit between the two, bringing changes such as attrs and states leaving the views, tree views becoming list views, and new constraints and security groups.
Three Releases Between Odoo 16 and Odoo 19
Your data passes through each of these releases on the way to Odoo 19. Here is what each one changes for custom modules, in order. We check every item against your database during the audit.
Get My Free Upgrade Audit-
November 2023
Odoo 17: attrs and states Leave the Views
- Every conditional field rule written with
attrsorstatesbecomes a Python expression. name_getis replaced by_compute_display_name, which affects how custom records show their names.- Install and uninstall hooks now receive
env, and settings screens use newapp,block, andsettingtags.
- Every conditional field rule written with
-
October 2024
Odoo 18: Tree Views Become List Views
- Tree views are renamed list views, including the
tree_view_refcontext key. user_has_groups,check_access_rights, andcheck_access_rulegive way tohas_groupandcheck_access.- Chatter and kanban markup change, with a single chatter tag and card templates for kanban views.
- Tree views are renamed list views, including the
-
September 2025
Odoo 19: New Constraints and Security Groups
- SQL constraints move from
_sql_constraintstomodels.Constraintandmodels.Indexattributes. groups_idbecomesgroup_ids, and group categories become privileges.read_groupis replaced by_read_grouporformatted_read_group, and JSON routes usetype="jsonrpc".
- SQL constraints move from
The OCA migration guides for Odoo 17 to 19 and Odoo's supported versions page.
How We Move Odoo 16 to Odoo 19
Five steps, each with a clear output, so you always know where the project stands.
Get My Free Upgrade AuditAudit
We list your apps, custom modules, third-party apps, and integrations on Odoo 16, then mark each one to upgrade, rebuild, or remove. You get a written scope and a fixed quote.
Test Upgrade
A copy of your database is upgraded through Odoo 17 to 19 while production keeps running. Every error is logged and fixed.
Port Custom Modules
Each module is rewritten for the Odoo 19 framework, including attrs and states leaving the views, tree views becoming list views, and new constraints and security groups.
Reconcile and Test
We compare trial balance, receivables and payables, stock valuation, and open documents with Odoo 16. Your key users then test their daily work on staging.
Rehearse and Go Live
A timed dry run sets the cutover window. Go-live happens off-hours, with a rollback plan and our team on hand afterwards.
Upgrade to Odoo 19 Now, or Wait?
A three-release upgrade is usually the cheapest it will ever be, because each release you skip adds work later. Here is how to decide on timing.
Upgrading now makes sense when
- Odoo 16 no longer gets security fixes.
- You need features or apps that only exist in Odoo 19.
- Your custom modules are few and actively maintained.
- Third-party apps you rely on already have Odoo 19 releases.
Waiting a little can make sense when
- A third-party app you rely on has no Odoo 19 release yet.
- You are in peak season and cannot spare key users for testing.
- You would rather go straight to Odoo 20 once your apps support it.
On Odoo Enterprise
Odoo's upgrade service converts the standard apps and data of your database. Modules built in-house or by third parties are not covered unless they are under a maintenance of customizations subscription, so they still need porting and testing.
On Odoo Community
The OCA's open-source OpenUpgrade project migrates one version at a time, so Odoo 16 to 19 means three consecutive runs. Coverage differs by app and release, so we check each one before planning.
Other Paths to Odoo 19
On a different version? Each path shows its own route, hop count, and complexity.
Odoo 18 to Odoo 19
1 hop- 18
- 19
- Complexity: Low
- Odoo 18: still supported
Odoo 17 to Odoo 19
2 hops- 17
- 18
- 19
- Complexity: Medium
- Odoo 17: standard support ended
Odoo Projects We Have Delivered
How our team handled Odoo projects where a failed change would have stopped daily operations.
View All Case StudiesOdoo + WhatsApp Automation with n8n Streamlined Furniture Retail Operations in Mauritius
See how Techvoot integrated Odoo ERP and n8n to automate delivery scheduling, driver assignment, proof of delivery and customer support for a Mauritius furniture retailer.
How Odoo ERP Transformed Operations for our UAE-Based Client's Oxy-Hydrogen Equipment Company
A UAE-based oxy-hydrogen equipment company partnered with Techvoot Solutions to implement a customized Odoo ERP platform that unified manufacturing, inventory, procurement, sales, and finance operations. The solution improved operational visibility, streamlined workflows, and enabled faster business decision-making through centralized ERP management.
Manufacturing Efficiency Boosted by 35% with Odoo ERP
A manufacturing company achieved 35% improved operational efficiency with Techvoot’s Odoo ERP implementation, enabling integrated production, inventory, finance, HR, and logistics management on a single platform.
Odoo 16 to Odoo 19 Upgrade Questions
Still unsure about your database?
Can I upgrade Odoo 16 directly to Odoo 19?
Yes, in one project with one go-live. The database still passes through every release in between, Odoo 17 and 18, and each custom module has to absorb the framework changes from all three releases. We run the whole route on a copy first, so production only moves once.
Is Odoo 16 still supported?
No. Odoo 16 was released in October 2022 and its standard support ended in 2025, so it gets no bug fixes or security updates. Odoo 19 is supported until September 2028 (planned).
How long does an Odoo 16 to Odoo 19 upgrade take?
It depends mostly on how many custom modules and integrations you have, and how much data you hold. With three releases to cross, custom code is the biggest part of the work. The free audit gives you a written timeline before any work starts.
What breaks most often when upgrading from Odoo 16 to Odoo 19?
Custom code, not standard data. The biggest changes on this path are attrs and states leaving the views in Odoo 17, tree views becoming list views in Odoo 18, and new constraints and security groups in Odoo 19.
Should we upgrade to Odoo 19 now or wait?
Odoo 16 no longer gets security fixes, so waiting adds risk. Plan it for a quieter period, once the third-party apps you rely on have Odoo 19 releases.
Will we keep our historical data?
Yes. An upgrade keeps your full history, including posted invoices, stock moves, and old documents. If some apps are rebuilt instead, we migrate master data and open balances, and the old database stays available read-only for reference.
Can we upgrade Odoo 16 Community to Odoo 19?
Yes. On Community, the open-source OpenUpgrade project migrates one version at a time, so this path means three consecutive runs. Coverage differs by app and release, so we check each one before planning, and port or rebuild where scripts are missing.
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