diff --git a/tmux.conf b/tmux.conf
index dd25b49..73f8127 100644
--- a/tmux.conf
+++ b/tmux.conf
@@ -36,6 +36,8 @@ set -g pane-base-index 1
 
 # Enable mouse support
 set-option -g mouse on
+# Prevent mouse click up events exiting copy mode
+unbind -T copy-mode-vi MouseDragEnd1Pane
 
 # Enable changing cursor shape per pane, vim or zsh should emit escape
 # sequences to change cursor shape.