diff --git a/docs/clients/auth/oauth.mdx b/docs/clients/auth/oauth.mdx
index 8656ff679..9403d3063 100644
--- a/docs/clients/auth/oauth.mdx
+++ b/docs/clients/auth/oauth.mdx
@@ -126,3 +126,7 @@ async with Client("https://fastmcp.cloud/mcp", auth=oauth) as client:
 ```
 
 You can use any `AsyncKeyValue`-compatible backend from the [key-value library](https://github.com/strawgate/py-key-value) including Redis, DynamoDB, and more. Wrap your storage in `FernetEncryptionWrapper` for encryption.
+
+<Note>
+When selecting a storage backend, review the [py-key-value documentation](https://github.com/strawgate/py-key-value) to understand the maturity level and limitations of your chosen backend. Some backends may be in preview or have constraints that affect production suitability.
+</Note>
diff --git a/docs/servers/storage-backends.mdx b/docs/servers/storage-backends.mdx
index 7147eccc3..f60ea1821 100644
--- a/docs/servers/storage-backends.mdx
+++ b/docs/servers/storage-backends.mdx
@@ -143,6 +143,10 @@ The py-key-value-aio library includes additional implementations for various sto
 
 For configuration details on these backends, consult the [py-key-value-aio documentation](https://github.com/strawgate/py-key-value).
 
+<Warning>
+Before using these backends in production, review the [py-key-value documentation](https://github.com/strawgate/py-key-value) to understand the maturity level and limitations of your chosen backend. Some backends may be in preview or have specific constraints that make them unsuitable for production use.
+</Warning>
+
 ## Use Cases in FastMCP
 
 ### Server-Side OAuth Token Storage