diff --git a/README.md b/README.md
index b287be0..636012c 100644
--- a/README.md
+++ b/README.md
@@ -27,6 +27,16 @@ Git to ignore local changes to the main `.gitconfig` file:
 
     git update-index --skip-worktree git/.gitconfig
 
+### zsh
+
+The zsh config has secrets now, because of the prompt username color fetching
+thing. You'll probably want to avoid committing your secrets:
+
+    git update-index --skip-worktree zsh/.config/zsh/config.d/00_secrets.zsh
+
+The prompt will still work if you don't fill in anything in that file, it'll
+just always be the default color (your terminal's `cyan`).
+
 ### KDE
 
 Files in `~/.local/share/color-schemes` come from [my repo of KDE titlebar color