GMX disables v2.2b contracts, sets September 14 deadline for integrator migration
In brief
- GMX disables v2.2b contracts September 14, 2026; integrators must migrate to v2.2c.
- v2.2c contracts live on Arbitrum, Avalanche, and MegaETH with expanded invariant checks and role-management protections.
- Integrators must update ExchangeRouter, Reader, and SimulationRouter addresses; ABIs and struct definitions changed.
- Regular users on official GMX interface face no disruption from the migration.
Migration Requirements and Scope
Anyone building on top of GMX's infrastructure—whether through direct contract calls or third-party integrations—needs to move to v2.2c before the cutoff date. The newer contracts are already live on Arbitrum, Avalanche, and MegaETH, making the migration window feasible for most teams.
The shift isn't merely a version bump. v2.2c introduces expanded invariant checks and role-management protections, strengthening the protocol's security posture. Integrators must update ExchangeRouter, Reader, and SimulationRouter addresses to reflect these changes.
Technical Changes Requiring Updates
ABIs have changed. Various struct definitions have been modified. This means integrators can't simply point old code at new addresses and expect it to work—they'll need to audit and adjust their implementations.
The complexity multiplies for teams operating across multiple networks. Each chain has its own set of contract addresses, meaning integrators operating across multiple networks need to update configurations independently for each chain. A single missed update across one network could leave that integration broken.
GMX has published deployment addresses and comprehensive changelogs on its GitHub repository, providing the technical documentation integrators need to execute the migration. The onus is on builders to review these resources and complete the work before September 14.
User Impact and Reassurance
For regular users interacting through the official GMX interface, nothing should break. The protocol's front-end will handle the transition seamlessly. The migration targets integrators and third-party platforms that have built custom connections to GMX's contract layer.
This deprecation cycle underscores a recurring challenge in DeFi infrastructure: coordinated upgrades require clear communication, sufficient notice, and readily available technical resources. GMX has provided all three. Whether integrators act on the deadline is now a test of ecosystem attention and operational readiness.
