diff --git a/CHANGES b/CHANGES
index 7bd864d2d77..f3838898128 100644
--- a/CHANGES
+++ b/CHANGES
@@ -19,6 +19,12 @@ $ pipx install --suffix=@next 'tmuxp' --pip-args '\--pre' --force
 
 <!-- Maintainers, insert changes / features for the next release here -->
 
+## Internal improvements
+
+- libtmux 0.18.3 -> 0.19.1 (#862)
+
+  0.19.1 has a fix for `Window.set_window_option()`
+
 ## tmuxp 1.24.1 (2023-01-07)
 
 ### Internal improvements
diff --git a/poetry.lock b/poetry.lock
index 874b13e8a3d..36c431253e3 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -478,14 +478,14 @@ i18n = ["Babel (>=2.7)"]
 
 [[package]]
 name = "libtmux"
-version = "0.18.3"
+version = "0.19.1"
 description = "Typed scripting library / ORM / API wrapper for tmux"
 category = "main"
 optional = false
 python-versions = ">=3.7,<4.0"
 files = [
-    {file = "libtmux-0.18.3-py3-none-any.whl", hash = "sha256:bfbc111d26050e74ad3bb1a73ffd243d70608f8b94611a46785b2c054aa1df3a"},
-    {file = "libtmux-0.18.3.tar.gz", hash = "sha256:3ea19ac20498342e2ed8334d18d9dc45a03f9c84c28eb613ed76a2ae38fde141"},
+    {file = "libtmux-0.19.1-py3-none-any.whl", hash = "sha256:0ab6986772555bca58c03400317b340975afc4b0acf5e614992b5e8aedf31517"},
+    {file = "libtmux-0.19.1.tar.gz", hash = "sha256:614fea2b09ed344735b4da2fe35e763ca2087e89a73c39d3663ed7f515fae356"},
 ]
 
 [[package]]
@@ -1624,4 +1624,4 @@ test = []
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.7"
-content-hash = "9c24ead80cf70d86cbf9332a990a308af83c9d593e3894524ee8daff8644f7c5"
+content-hash = "f7a4d54b648a94b51c269f80af6bd66a7b930e758be938b6733aa481d9db090d"
diff --git a/pyproject.toml b/pyproject.toml
index a529b729319..e51044d76d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ tmuxp = 'tmuxp:cli.cli'
 
 [tool.poetry.dependencies]
 python = "^3.7"
-libtmux = "~0.18.3"
+libtmux = "~0.19.1"
 colorama = ">=0.3.9"
 PyYAML = "^6.0"