diff --git a/changes/88.misc.rst b/changes/88.misc.rst
new file mode 100644
index 0000000..ea2a8e1
--- /dev/null
+++ b/changes/88.misc.rst
@@ -0,0 +1 @@
+Updated tox from 4.8.0 to 4.9.0.
diff --git a/setup.cfg b/setup.cfg
index a0cd0f3..9f9fe98 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -38,7 +38,7 @@ dev =
     pre-commit == 3.3.3
     pytest == 7.4.0
     setuptools_scm[toml] == 7.1.0
-    tox == 4.8.0
+    tox == 4.9.0
 
 [options.packages.find]
 where = src