diff --git a/.tmux.conf b/.tmux.conf
index abe35fd..a7f4b96 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -26,7 +26,7 @@ if-shell 'tmux -V | grep -Eq "tmux 2\.[0-3]"' " \
     bind -t vi-copy y copy-pipe 'xclip -sel clip -i'; \
 "
 
-if-shell 'tmux -V | grep -Eq "tmux 2\.[4-9]"' " \
+if-shell 'tmux -V | grep -Eq "tmux (2\.[4-9])|(3\.)"' " \
     bind-key -T copy-mode-vi v send-keys -X begin-selection; \
     bind-key -T copy-mode-vi y send-keys -X copy-selection; \
 "