diff --git a/.envrc b/.envrc
index bb87feeb6..2ca233b93 100644
--- a/.envrc
+++ b/.envrc
@@ -5,4 +5,5 @@ if has nix; then
   use flake
 fi
 
+# Source an `.envrc.local` if it exists. You can add your custom changes there.
 [[ -f .envrc.local ]] && source_env .envrc.local