diff --git a/completions/bash/swaymsg b/completions/bash/swaymsg
index 0b011902..a333c912 100644
--- a/completions/bash/swaymsg
+++ b/completions/bash/swaymsg
@@ -17,10 +17,12 @@ _swaymsg()
     'get_binding_modes'
     'get_config'
     'send_tick'
+    'subscribe'
   )
 
   short=(
     -h
+    -m
     -p
     -q
     -r
@@ -31,6 +33,7 @@ _swaymsg()
 
   long=(
     --help
+    --monitor
     --pretty
     --quiet
     --raw
diff --git a/completions/fish/swaymsg.fish b/completions/fish/swaymsg.fish
index 37a24513..677ffe97 100644
--- a/completions/fish/swaymsg.fish
+++ b/completions/fish/swaymsg.fish
@@ -1,6 +1,7 @@
 # swaymsg(1) completion
 
 complete -c swaymsg -s h -l help --description "Show help message and quit."
+complete -c swaymsg -s m -l monitor --description "Monitor subscribed events until killed."
 complete -c swaymsg -s p -l pretty --description "Use pretty output even when not using a tty."
 complete -c swaymsg -s q -l quiet --description "Sends the IPC message but does not print the response from sway."
 complete -c swaymsg -s r -l raw --description "Use raw output even if using tty."
@@ -19,3 +20,4 @@ complete -c swaymsg -s t -l type -fra 'get_binding_modes' --description "Gets a
 complete -c swaymsg -s t -l type -fra 'get_config' --description "Gets a JSON-encoded copy of the current configuration."
 complete -c swaymsg -s t -l type -fra 'get_seats' --description "Gets a JSON-encoded list of all seats, its properties and all assigned devices."
 complete -c swaymsg -s t -l type -fra 'send_tick' --description "Sends a tick event to all subscribed clients."
+complete -c swaymsg -s t -l type -fra 'subscribe' --description "Subscribe to a list of event types."
diff --git a/completions/zsh/_swaymsg b/completions/zsh/_swaymsg
index c11fa990..3f42a77d 100644
--- a/completions/zsh/_swaymsg
+++ b/completions/zsh/_swaymsg
@@ -25,6 +25,7 @@ types=(
 'get_binding_modes'
 'get_config'
 'send_tick'
+'subscribe'
 )
 
 _arguments -s \