diff --git a/README.md b/README.md
index 5bc513b9..7701573a 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,8 @@ Before running Bubble, you need to build it. Run:
 
 This will grab all the submodules and perform an initial build of all components.
 
+This will take a while to complete, please be patient.
+
 ## Deployment Modes
 Bubble runs in three different modes.
 In order to launch and use your own Bubble that you can connect devices to and use,
diff --git a/docs/dev.md b/docs/dev.md
index 7a10be74..5c0cdc22 100644
--- a/docs/dev.md
+++ b/docs/dev.md
@@ -27,6 +27,8 @@ After running the system setup above, run:
 
 This will grab all the submodules and perform an initial build of all components.
 
+This will take a while to complete, please be patient.
+
 ## Bubble environment file
 You will need a file named `${HOME}/.bubble.env` which contains various environment variables required to run the server.