diff --git a/programs/tmux/default.nix b/programs/tmux/default.nix
index 5fc194c..9937d43 100644
--- a/programs/tmux/default.nix
+++ b/programs/tmux/default.nix
@@ -13,6 +13,8 @@
       set -g set-titles on
       set -s escape-time 0
 
+      set-option -g default-shell /bin/zsh
+
       set-window-option -g mode-keys vi
 
       # clipboard stuff