diff --git a/README.md b/README.md
index 55f2e37..946a214 100644
--- a/README.md
+++ b/README.md
@@ -43,9 +43,8 @@ container first:
 
     $ make docker
 
-Note that building the image can take up to 45 minutes even on
-high-end hardware and internet, and it requires about 15 GB of disk
-space.
+Note that building the image typically requires over an hour and 20 GB
+of disk space.
 
 ## Flag