# JAX runtime warning

**URL:** <https://discuss.pennylane.ai/t/jax-runtime-warning/8737>\
**Category:** PennyLane Help\
**Created:** [July 8, 2025, 5:12pm UTC](https://discuss.pennylane.ai/t/jax-runtime-warning/8737 "2025-07-08T17:12:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mdaamir](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@mdaamir](https://discuss.pennylane.ai/u/mdaamir)\
**Post date:** [July 8, 2025, 5:12pm UTC](https://discuss.pennylane.ai/t/jax-runtime-warning/8737/1 "2025-07-08T17:12:43Z")

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I am getting the following warning while using JAX with Pennylane.

**RuntimeWarning: PennyLane is currently not compatible with versions of JAX \> 0.4.28. You have version 0.5.2 installed.**

Here is the qml.about()  
Name: PennyLane  
Version: 0.41.1  
Summary: PennyLane is a cross-platform Python library for quantum computing, quantum machine learning, and quantum chemistry. Train a quantum computer the same way as a neural network.  
Home-page: [GitHub - PennyLaneAI/pennylane: PennyLane is a cross-platform Python library for quantum computing, quantum machine learning, and quantum chemistry. Built by researchers, for research.](https://github.com/PennyLaneAI/pennylane)  
Author:  
Author-email:  
License: Apache License 2.0  
Location: /usr/local/lib/python3.11/dist-packages  
Requires: appdirs, autograd, autoray, cachetools, diastatic-malt, networkx, numpy, packaging, pennylane-lightning, requests, rustworkx, scipy, tomlkit, typing-extensions  
Required-by: PennyLane\_Lightning

Platform info: Linux-6.1.123±x86\_64-with-glibc2.35  
Python version: 3.11.13  
Numpy version: 2.0.2  
Scipy version: 1.15.3  
Installed devices:

- default.clifford (PennyLane-0.41.1)
- default.gaussian (PennyLane-0.41.1)
- default.mixed (PennyLane-0.41.1)
- default.qubit (PennyLane-0.41.1)
- default.qutrit (PennyLane-0.41.1)
- default.qutrit.mixed (PennyLane-0.41.1)
- default.tensor (PennyLane-0.41.1)
- null.qubit (PennyLane-0.41.1)
- reference.qubit (PennyLane-0.41.1)
- lightning.qubit (PennyLane\_Lightning-0.41.1)

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**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\
**Post date:** [July 9, 2025, 12:47am UTC](https://discuss.pennylane.ai/t/jax-runtime-warning/8737/2 "2025-07-09T00:47:31Z")

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Hi @mdaamir ,

As the warning says, our current version of PennyLane doesn’t support the latest JAX. However this will change in just one week!

As of the next release, PennyLane will support `jax == 0.6.0` and `0.5.3`. See more details in these PRs: [(#6919)](https://github.com/PennyLaneAI/pennylane/pull/6919) [(#7299)](https://github.com/PennyLaneAI/pennylane/pull/7299)

In the meantime here are some options:

1. Downgrade your versions of JAX and Jaxlib (`pip install jax==0.4.28 jaxlib==0.4.28`)
2. Use the `master` version of PennyLane `pip install git+https://github.com/PennyLaneAI/pennylane.git#egg=pennylane`  
(see more install instructions [on our website](https://pennylane.ai/install) if needed)
3. Wait until next week (~Tuesday) and update your PennyLane version

I hope these work for you!

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<div class="post-metadata">

**Author:** ![mdaamir](https://avatars.discourse-cdn.com/v4/letter/m/ce7236/32.png) [@mdaamir](https://discuss.pennylane.ai/u/mdaamir)\
**Post date:** [July 9, 2025, 2:57am UTC](https://discuss.pennylane.ai/t/jax-runtime-warning/8737/3 "2025-07-09T02:57:41Z")

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Thank you! @CatalinaAlbornoz

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**Author:** ![sojak](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/sojak/32/3904_2.png) [@sojak](https://discuss.pennylane.ai/u/sojak)\
**Post date:** [July 15, 2025, 2:23pm UTC](https://discuss.pennylane.ai/t/jax-runtime-warning/8737/4 "2025-07-15T14:23:17Z")

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Hi, is this new release still set for today (Tuesday) as mentioned? If not, how can I use the master version of pennylane in google colab?

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**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\
**Post date:** [July 16, 2025, 12:35am UTC](https://discuss.pennylane.ai/t/jax-runtime-warning/8737/5 "2025-07-16T00:35:12Z")

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Hi @sojak , welcome to the Forum!

The new release is now out!

You can use `pip install pennylane --upgrade` to use it.  
In the future if you need to use the master version you can run:  
`pip install git+https://github.com/PennyLaneAI/pennylane.git#egg=pennylane`

You can see more install options in [pennylane.ai/install](https://pennylane.ai/install).

I hope this helps!