diff --git a/wm/bspwm/bspwmrc b/wm/bspwm/bspwmrc
index a7d5e117..2b061fc1 100755
--- a/wm/bspwm/bspwmrc
+++ b/wm/bspwm/bspwmrc
@@ -28,6 +28,7 @@ bspc config gapless_monocle      false
 bspc rule -a Emacs desktop='^4' state=fullscreen follow=on
 bspc rule -a Chromium desktop='^6'
 bspc rule -a TmuxAlacritty desktop='^5' follow=on
+bspc rule -a Slack desktop='^9' follow=on
 
 # Rules don't work for electron apps - see:
 # https://github.com/baskerville/bspwm/issues/291#issuecomment-145329416