diff --git a/Formula/scimax.rb b/Formula/scimax.rb
index 8846ba8..4db918c 100644
--- a/Formula/scimax.rb
+++ b/Formula/scimax.rb
@@ -17,7 +17,7 @@ class Scimax < Formula
 
   #
   head do
-    url "https://github.com/jkitchin/scimax.git", branch: "homebrew"
+    url "https://github.com/jkitchin/scimax.git", branch: "master"
   end
   
   depends_on "cask"
diff --git a/notes.org b/notes.org
index 46e91cf..a206666 100644
--- a/notes.org
+++ b/notes.org
@@ -25,12 +25,14 @@ I figured out how to get the git repo, working. it requires head, and might make
 This 
 [[/usr/local/Cellar/scimax/HEAD-7c147b0]]
 
-** TODO update user files
+** DONE update user files
+CLOSED: [2024-02-09 Fri 14:59]
 
 These should be moved to something like ~/.emacs.d/scimax or ~/.config/scimax, or some user-defined space (I guess by env-var?).
 
 
-** TODO setup the tap
+** DONE setup the tap
+CLOSED: [2024-02-09 Fri 14:59]
 
 https://docs.brew.sh/How-to-Create-and-Maintain-a-Tap
 
diff --git a/readme.org b/readme.org
index 5ae4d21..b641e5a 100644
--- a/readme.org
+++ b/readme.org
@@ -45,6 +45,19 @@ $ brew install scimax
 #+END_SRC
 
 
+*** Updating / reinstalling
+
+Probably you should first /uninstall/ scimax.
+
+#+BEGIN_SRC sh
+brew uninstall scimax
+#+END_SRC
+
+Then, it is a good idea to update brew, and reinstall it.
+
+#+BEGIN_SRC sh
+brew update && brew install scimax
+#+END_SRC
 
 
 * Goals