The dYdX v4 chain has rolled out its latest release, v9.6.3, on May 15, 2026. This update focuses on a critical infrastructure upgrade, bringing in newer versions of the Cosmos SDK and CometBFT.
The primary goal of the upgrade is to mitigate height‑poisoning attacks, a vulnerability that could allow malicious actors to disrupt block validation by manipulating the perceived blockchain height. By backporting the fix from issue #3338, the team ensures that the chain remains secure while maintaining compatibility with existing deployments.
Developers can review the full list of changes in the GitHub changelog, which details the specific patches applied and any additional minor adjustments. The release notes also confirm that the upgrade is backward compatible with prior v9.6.2 deployments.
Security remains a top priority for the dYdX ecosystem, and this patch demonstrates the protocol’s commitment to proactive risk mitigation. Users and node operators are encouraged to apply the update promptly to benefit from the enhanced protection.
The v9.6.3 release is available for download and integration through the standard dYdX v4 chain release channels. For more information, refer to the official GitHub repository and the associated changelog documentation.