diff --git a/docs/index.md b/docs/index.md
index 69db76e57fa..1874c184143 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -43,10 +43,11 @@ To also install our recommended dependencies:
 pip install -U mesa[rec]
 ```
 
+The `[rec]` option installs additional recommended dependencies needed for visualization, plotting, and network modeling capabilities.
+
 On a Mac, this command might cause an error stating `zsh: no matches found: mesa[all]`.
 In that case, change the command to `pip install -U "mesa[rec]"`.
 
-
 ### Resources
 
 For help getting started with Mesa, check out these resources: