> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Minimum versions for self-hosting dependencies
> Minimum supported versions for the databases, tools, and infrastructure required to self-host LangSmith.
This page lists the minimum supported versions for the databases, tools, and infrastructure used by self-hosted LangSmith. Install a version that meets or exceeds the minimum before deploying or upgrading. Using a version below the minimum is not supported and may cause installation or runtime failures.
If you are using a managed service (such as Amazon RDS, Google Cloud SQL, or Azure Database), pick a version at or above the minimum listed here. Refer to the linked "External services" pages for connection and authentication details.
## Datastores
| Dependency | Minimum version | Notes |
| ------------------------------------------------------ | --------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [PostgreSQL](/langsmith/self-host-external-postgres) | 14 | Primary relational store for operational data. Required for both LangSmith and standalone Agent Server deployments. Used to install the `btree_gin`, `btree_gist`, `pgcrypto`, `citext`, `ltree`, and `pg_trgm` extensions. |
| [Redis](/langsmith/self-host-external-redis) | 5 | Used for queueing and caching. Standalone and Redis Cluster modes are both supported. |
| [Valkey](/langsmith/self-host-external-redis) | 8 | Officially supported as a drop-in replacement for Redis. Standalone and Cluster modes are both supported. |
| [ClickHouse](/langsmith/self-host-external-clickhouse) | Version specified in the [LangSmith Helm chart](https://github.com/langchain-ai/helm/releases) or greater | Stores traces and feedback. ClickHouse versions >= 24.2 require LangSmith v0.6 or later. Downgrades are not supported. |
**Redis \< 5 and PostgreSQL \< 14 are not supported.** A LangSmith installation pointed at an older Redis or PostgreSQL instance may fail to start or behave unpredictably. Upgrade your datastore before installing or upgrading LangSmith.
## Compute and orchestration
| Dependency | Minimum version | Notes |
| ------------------------------------------- | ------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- |
| [Kubernetes](/langsmith/kubernetes) | Any version supported by the [upstream Kubernetes release cycle](https://kubernetes.io/releases/) | LangSmith is regularly tested on GKE, EKS, AKS, Minikube, and Kind. |
| [OpenShift](/langsmith/kubernetes) | 4.14 | Supported as a Kubernetes distribution for LangSmith. |
| [Helm](https://helm.sh/docs/intro/install/) | 3 | Used to install and upgrade the LangSmith Helm chart. |
| Docker | A version compatible with [Docker Compose v2](https://docs.docker.com/compose/) | Required for Docker-based standalone Agent Server deployments. |
## LangSmith chart and platform
| Dependency | Minimum version | Notes |
| --------------------------------------------------------------------- | ------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [LangSmith Helm chart](https://github.com/langchain-ai/helm/releases) | Latest stable release | We recommend pinning to the latest stable chart release. Refer to the [self-hosted changelog](/langsmith/self-hosted-changelog) for per-release upgrade notes. |
| Egress to `https://beacon.langchain.com` | LangSmith 0.9.0 or later | Required for license verification and usage reporting unless running in [offline mode](/langsmith/self-host-egress). |
## Where these versions are enforced
* PostgreSQL `>= 14`: refer to [Connect to an external PostgreSQL database](/langsmith/self-host-external-postgres#requirements).
* Redis `>= 5` and Valkey `8`: refer to [Connect to an external Redis or Valkey database](/langsmith/self-host-external-redis#requirements).
* ClickHouse: use the version specified in the [LangSmith Helm chart](https://github.com/langchain-ai/helm/releases) or greater: refer to [Connect to an external ClickHouse database](/langsmith/self-host-external-clickhouse#requirements).
* Kubernetes cluster prerequisites: refer to [Self-host LangSmith on Kubernetes](/langsmith/kubernetes#prerequisites).
If you are unsure which version is currently running, contact your database administrator or refer to your cloud provider's console. If you need to upgrade a dependency before upgrading LangSmith, refer to your vendor's documentation.
***
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