diff --git a/docs/getting-started/env-configuration.md b/docs/getting-started/env-configuration.md
index ff76bed..1bfad02 100644
--- a/docs/getting-started/env-configuration.md
+++ b/docs/getting-started/env-configuration.md
@@ -145,7 +145,7 @@ is also being used and set to `True`. Failure to do so will result in the inabil
 
 - Type: `int`
 - Default: `0`
-- Description: Sets the thread pool size for FastAPI/AnyIO blocking calls. By default FastAPI/AnyIO use `40` threads.
+- Description: Sets the thread pool size for FastAPI/AnyIO blocking calls. By default (when set to 0) FastAPI/AnyIO use `40` threads. In case of large instances and many concurrent users, it may be needed to increase `THREAD_POOL_SIZE` to prevent blocking.
 
 #### `SHOW_ADMIN_DETAILS`