---
title: Qiskit addons changelog
description: The latest updates from Qiskit addons, including the latest package release summaries and platform updates.
source: https://quantum.cloud.ibm.com/docs/en/guides/changelog-qiskit-addons
---

# Qiskit addons

## June 2026

- Introducing [Qiskit Paulice](/docs/addons/qiskit-addon-paulice): a new addon that integrates low-overhead quantum error detection into quantum circuits to boost the fidelity of measured distributions. It provides single-shot access to the quantum state and so can be used in both sampling-based and expectation value-based workflows. Check out the [blog](https://www.ibm.com/quantum/blog/qiskit-paulice) and [documentation](/docs/addons/qiskit-addon-paulice) for how to get started today.

## Previous updates

- We recently released two new addons that use classical resources to reduce the quantum resources needed for error mitigation:

  - [Propagated noise absorption (PNA)](https://qiskit.github.io/qiskit-addon-pna/) is a technique for mitigating errors in expectation values by absorbing the inverses of the learned noise channels into observables using Pauli propagation.

  - The [Shaded lightcones (SLC)](https://qiskit.github.io/qiskit-addon-slc/) addon uses classical simulations to more tightly bound the sensitivity to errors throughout the circuit. This allows for more efficient, targeted applications of Probabilistic Error Cancellation (PEC) with reduced variance.