diff --git a/.Brewfile b/.Brewfile
index 7f6204c..378dcc2 100644
--- a/.Brewfile
+++ b/.Brewfile
@@ -234,6 +234,7 @@ cask "mactex-no-gui"
 cask "microsoft-auto-update"
 cask "microsoft-edge"
 cask "monitorcontrol"
+cask "multifirefox"
 cask "musicbrainz-picard"
 cask "obsidian"
 cask "patchwork"