# Jax and Pennylane

**URL:** <https://discuss.pennylane.ai/t/jax-and-pennylane/8583>\
**Category:** PennyLane Help\
**Created:** [June 4, 2025, 3:37pm UTC](https://discuss.pennylane.ai/t/jax-and-pennylane/8583 "2025-06-04T15:37:49Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![daniela.murcillo](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/daniela.murcillo/32/3612_2.png) [@daniela.murcillo](https://discuss.pennylane.ai/u/daniela.murcillo)\
**Post date:** [June 4, 2025, 5:19pm UTC](https://discuss.pennylane.ai/t/jax-and-pennylane/8583/2 "2025-06-04T17:19:49Z")

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Hi @quantumlover  
Welcome to the forum!  
I believe this is related to the JAX version you are using not being compatible with Pennylane yet.  
I ran the code myself using JAX v0.4.28 and it works. See [this](https://discuss.pennylane.ai/t/attributeerror-module-jax-core-has-no-attribute-concretearray-problems-using-jax-grad-circuit/8053/4) from another previous post.  
Let me know if downgrading JAX version works for you.

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