# Dependency conflit on crewai upgrade **URL:** \ **Category:** CrewAI Community Support\ **Created:** [September 25, 2024, 9:38am UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540 "2024-09-25T09:38:14Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Lourama](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/lourama/32/164_2.png) [@Lourama](https://community.crewai.com/u/Lourama)\ **Post date:** [September 25, 2024, 9:38am UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/1 "2024-09-25T09:38:14Z")
after upgrading the Crewai version to 0.63.6 I got this error message: ERROR: pip’s dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts. crewai-tools 0.2.6 requires langchain\<0.2.0,\>=0.1.4, but you have langchain 0.2.16 which is incompatible. How should I resolve this issue? ---
**Author:** ![matt](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/matt/32/3_2.png) [@matt](https://community.crewai.com/u/matt)\ **Post date:** [September 25, 2024, 1:37pm UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/2 "2024-09-25T13:37:12Z")
uninstall langchain, we do not need it any more unless you are using it ---
**Author:** ![Lourama](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/lourama/32/164_2.png) [@Lourama](https://community.crewai.com/u/Lourama)\ **Post date:** [September 25, 2024, 3:50pm UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/3 "2024-09-25T15:50:29Z")
Thank you. It’s working now. ---
**Author:** ![888digital888](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/888digital888/32/382_2.png) [@888digital888](https://community.crewai.com/u/888digital888)\ **Post date:** [September 26, 2024, 5:41am UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/4 "2024-09-26T05:41:54Z")
Does that include langchain\_openai? ---
**Author:** ![matt](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/matt/32/3_2.png) [@matt](https://community.crewai.com/u/matt)\ **Post date:** [September 26, 2024, 5:43am UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/5 "2024-09-26T05:43:06Z")
Correct you do not need to use langchain constructor any more unless you want to as we now use LiteLLM ---
**Author:** ![888digital888](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/888digital888/32/382_2.png) [@888digital888](https://community.crewai.com/u/888digital888)\ **Post date:** [September 26, 2024, 12:37pm UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/6 "2024-09-26T12:37:59Z")
why are we now using litellm? is there a way to use my current openai api with this as its already loaded with $? also can you point me to the part in the docs which instructs about litellm as im not finding it ---
**Author:** ![matt](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/matt/32/3_2.png) [@matt](https://community.crewai.com/u/matt)\ **Post date:** [September 26, 2024, 12:53pm UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/7 "2024-09-26T12:53:24Z")
because it offers better management of LLMs is there a way to use my current openai api with this as its already loaded with $? ← Not sure what you mean by this? just add your API key as you normally would LiteLLM is built into crewAI meaning all you have to do is set your model - [Connect CrewAI to LLMs - crewAI](https://docs.crewai.com/how-to/LLM-Connections/) ---
**Author:** ![888digital888](https://sea1.discourse-cdn.com/flex025/user_avatar/community.crewai.com/888digital888/32/382_2.png) [@888digital888](https://community.crewai.com/u/888digital888)\ **Post date:** [September 26, 2024, 12:55pm UTC](https://community.crewai.com/t/dependency-conflit-on-crewai-upgrade/540/8 "2024-09-26T12:55:36Z")
ok thanks, i will try it now