diff --git a/runtime/syntax/tmux.vim b/runtime/syntax/tmux.vim
index 9766ed5..80636f2 100644
--- a/runtime/syntax/tmux.vim
+++ b/runtime/syntax/tmux.vim
@@ -1,5 +1,5 @@
 " Language: tmux(1) configuration file
-" Version: 3.4 (git-608d1134)
+" Version: 3.4 (git-171004df)
 " URL: https://github.com/ericpruitt/tmux.vim/
 " Maintainer: Eric Pruitt <eric.pruitt@gmail.com>
 " License: 2-Clause BSD (http://opensource.org/licenses/BSD-2-Clause)
@@ -28,7 +28,7 @@
 syn match tmuxNumber            /\<\d\+\>/             display
 syn match tmuxFlags             /\s-\a\+/              display
 syn match tmuxVariableExpansion /\$\({[A-Za-z_]\w*}\|[A-Za-z_]\w*\)/ display
-syn match tmuxControl           /\(^\|\s\)%\(if\|elif\|else\|endif\)\($\|\s\)/ display
+syn match tmuxControl           /\(^\|\s\)%\(if\|elif\|else\|endif\|hidden\)\($\|\s\)/ display
 syn match tmuxEscape            /\\\(u\x\{4\}\|U\x\{8\}\|\o\{3\}\|[\\ernt$]\)/ display
 
 " Missing closing bracket.
@@ -99,11 +99,11 @@
 \ after-set-environment after-set-hook after-set-option after-show-environment
 \ after-show-messages after-show-options after-split-window after-unbind-key
 \ aggressive-resize alert-activity alert-bell alert-silence allow-passthrough
-\ allow-rename alternate-screen assume-paste-time automatic-rename
-\ automatic-rename-format backspace base-index bell-action buffer-limit
-\ client-active client-attached client-detached client-focus-in
+\ allow-rename allow-set-title alternate-screen assume-paste-time
+\ automatic-rename automatic-rename-format backspace base-index bell-action
+\ buffer-limit client-active client-attached client-detached client-focus-in
 \ client-focus-out client-resized client-session-changed clock-mode-color
-\ clock-mode-colour clock-mode-style command-alias copy-command
+\ clock-mode-colour clock-mode-style command-alias command-error copy-command
 \ copy-mode-current-match-style copy-mode-mark-style copy-mode-match-style
 \ cursor-color cursor-colour cursor-style default-command default-shell
 \ default-size default-terminal destroy-unattached detach-on-destroy