diff --git a/README.md b/README.md
index 3caa621..0ecc419 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,16 @@ Building Envision profiles:
 If you had AtomicXR installed before version `1.0.0`, try running this command and rebooting:
 - `nu -c "rm -rf ~/.local/share/atomic-xr $'($env.HOME)/.local/bin/{oscavmgr-launch,oscavmgr,motoc,wlx-overlay-s,wayvr-dashboard}' | str expand | str join ' '; try {toolbox rm -f atomic-xr}; try {rpm-ostree remove nu}"`
 
+### Formulae found in multiple taps
+If you had this tap or AtomicXR installed before Aug 10, 2025, you might see an error message like:
+```
+Error: Formulae found in multiple taps:
+       * shiloh/atomicxr/atomicxr-cli
+       * matrixfurry.com/atomicxr/atomicxr-cli
+```
+
+To resolve this, remove the old tap with `brew untap shiloh/atomicxr`
+
 ### `unknown flag: -o` for `reject` function:
 - Make sure your Nushell version (`nu -v`) is up to date, `0.106.0` is the minimum required version.
 - If AtomicXR installed Nushell for you, you can update it with `brew upgrade`