diff --git a/gay b/gay
index baf2c7b..5146c32 100755
--- a/gay
+++ b/gay
@@ -529,7 +529,7 @@ def _title() -> Iterator[None]:
     def cont(title: str) -> None:
         stdout.write("\x1B[0m")
         if "TMUX" in environ:
-            stdout.write(f"\x1Bk{title}\x1B\\")
+            stdout.write(f"\x1B]2{title}\x1B\\")
         else:
             stdout.write(f"\x1B]0;{title}\x1B\\")
 
diff --git a/setup.cfg b/setup.cfg
index a42748b..c1d55e8 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -13,7 +13,7 @@ long_description = file: README.md
 long_description_content_type = text/markdown
 name = gay
 url = https://github.com/ms-jpq/gay
-version = 1.2.12
+version = 1.2.13
 
 [options]
 packages =