diff --git a/languages.toml b/languages.toml
index bfa33bf58ea02..78078ca5886a9 100644
--- a/languages.toml
+++ b/languages.toml
@@ -860,6 +860,7 @@ file-types = [
   "tcshrc",
   "bashrc_Apple_Terminal",
   "zshrc_Apple_Terminal",
+  { glob = "tmux.conf" },
   { glob = ".bash_history" },
   { glob = ".bash_login" },
   { glob = ".bash_logout" },