diff --git a/lib/livebook/notebook/welcome.ex b/lib/livebook/notebook/welcome.ex
index 86f616f05..19c897420 100644
--- a/lib/livebook/notebook/welcome.ex
+++ b/lib/livebook/notebook/welcome.ex
@@ -144,6 +144,10 @@ defmodule Livebook.Notebook.Welcome do
   dependencies into your Elixir runtime! This approach is especially useful when sharing notebooks
   because everyone will be able to get the same dependencies. Let's try this out:
 
+  **Note:** compiling dependencies may use a reasonable amount of memory. If you are
+  hosting Livebook, make sure you have enough memory allocated to the Livebook
+  instance, otherwise the command below will fail.
+
   ```elixir
   # Note: this requires Elixir version >= 1.12
   Mix.install([