> ## Documentation Index
> Fetch the complete documentation index at: https://docs.optimism.io/llms.txt
> Use this file to discover all available pages before exploring further.

# op-proposer Releases

> Release history for op-proposer. L2 output root proposer.

**op-proposer** automates output-root proposal transactions on L1 at a regular interval, submitting claims of L2 state that enable withdrawals. See the [proposals spec](https://github.com/ethereum-optimism/specs/blob/main/specs/protocol/proposals.md).

<Update label="May 23, 2026" description="v1.16.3" tags={["Latest", "Stable"]}>
  ## Overview

  This is a patch release of op-proposer. The bulk of the changes are preparation for a future interop release; for non-interop deployments the main change is a bump of the underlying op-geth dependency. It is an optional upgrade for all users.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.16.3)
</Update>

<Update label="March 31, 2026" description="v1.16.2" tags={["Stable"]}>
  This release is optional; however, we recommend updating as it includes a Go version upgrade addressing security fixes, along with enhanced container image hardening.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.16.2)
</Update>

<Update label="March 9, 2026" description="v1.16.1" tags={["Stable"]}>
  This is an optional release.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.16.1)
</Update>

<Update label="February 26, 2026" description="v1.16.0" tags={["Stable"]}>
  > \[!WARNING]
  > The previous version is v1.10.2. An erroneous tag v1.15.1 got created and this release skips past that faulty tag to ensure proper ordering of public tags is restored.

  > \[!NOTE]
  > This is an optional release. An upgrade is only necessary if you need the new support to fetch proposals via the supernode rpc (#18940)

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.16.0)
</Update>

<Update label="January 9, 2026" description="v1.10.2" tags={["Stable"]}>
  ## Overview

  This is a minor release of op-proposer that includes important bug fixes. It is a required upgrade for all users.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.10.2)
</Update>

<Update label="March 4, 2025" description="v1.10.0" tags={["Stable"]}>
  This is a recommended release for all users to upgrade.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.10.0)
</Update>

<Update label="March 27, 2023" description="v1.0.1" tags={["Stable"]}>
  This finalizes op-proposer v1.0.0-rc.2

  * Better handling of underpriced transaction in Tx Manager (#5141)
  * Lots of logging improvements
  * Increased timeouts for sending transactions (#5142)
  * Logger now is log-format by default if it does not detect a terminal (i.e. running in docker) (#5085)
    * Can specify `terminal`, `logfmt`, `json`. `text` means `terminal` if it detects a terminal other it means `logfmt`
    * `color` still defaults to true if it detects a terminal. Only relevant for `terminal` logging.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.0.1)
</Update>

<Update label="March 20, 2023" description="v1.0.0-rc.2" tags={["Release Candidate"]}>
  * Better handling of underpriced transaction in Tx Manager (#5141)
  * Lots of logging improvements
  * Increased timeouts for sending transactions (#5142)
  * Logger now is log-format by default if it does not detect a terminal (i.e. running in docker) (#5085)
    * Can specify `terminal`, `logfmt`, `json`. `text` means `terminal` if it detects a terminal other it means `logfmt`
    * `color` still defaults to true if it detects a terminal. Only relevant for `terminal` logging.

  [View full release on GitHub →](https://github.com/ethereum-optimism/optimism/releases/tag/op-proposer/v1.0.0-rc.2)
</Update>