diff --git a/.config/alacritty/alacritty.yml b/.config/alacritty/alacritty.yml
index a29b795..6816bd4 100644
--- a/.config/alacritty/alacritty.yml
+++ b/.config/alacritty/alacritty.yml
@@ -1,7 +1,7 @@
-env:
-  # For better compatibility.
-  # <https://github.com/alacritty/alacritty/issues/2049>
-  TERM: xterm-256color
+# env:
+#   # For better compatibility.
+#   # <https://github.com/alacritty/alacritty/issues/2049>
+#   TERM: xterm-256color
 
 font:
   normal:
diff --git a/.tmux.conf b/.tmux.conf
index 6009265..2e96988 100644
--- a/.tmux.conf
+++ b/.tmux.conf
@@ -18,6 +18,7 @@ set -g default-command "exec /bin/zsh"
 
 # Enable Truecolor
 set-option -ga terminal-overrides ",xterm*:RGB:Tc,rxvt-unicode*:RGB:Tc"
+set -ga terminal-features ",alacritty*:RGB"
 set -g default-terminal "tmux-256color"
 
 # Make M-<up> and so on work in Emacs.