diff --git a/tmux/.config/tmux/tmux.conf b/tmux/.config/tmux/tmux.conf
index 3c6323a..818f8b3 100644
--- a/tmux/.config/tmux/tmux.conf
+++ b/tmux/.config/tmux/tmux.conf
@@ -6,7 +6,11 @@ set -g @plugin '2kabhishek/tmux2k'
 
 set -g @tmux2k-theme 'default icons'
 
-set -ga terminal-overrides ",xterm-256color:Tc"
+set -g default-terminal 'tmux-256color'
+# undercurl support
+set -as terminal-overrides ',*:Smulx=\E[4::%p1%dm'
+# support colors for undercurl
+set -as terminal-overrides ',*:Setulc=\E[58::2::%p1%{65536}%/%d::%p1%{256}%/%{255}%&%d::%p1%{255}%&%d%;m'
 
 set-option -g mouse on