diff --git a/doc/whatsnew/fragments/8632.bugfix b/doc/whatsnew/fragments/8632.bugfix
new file mode 100644
index 0000000000..25619d412a
--- /dev/null
+++ b/doc/whatsnew/fragments/8632.bugfix
@@ -0,0 +1,4 @@
+tomlkit max version was set to 0.11.7 following a
+regression in tomlkit 0.11.8.
+
+Closes #8632
diff --git a/pyproject.toml b/pyproject.toml
index 59e4ccb1c4..fb3cfd0d6e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,7 @@ dependencies    = [
     "isort>=4.2.5,<6",
     "mccabe>=0.6,<0.8",
     "tomli>=1.1.0;python_version<'3.11'",
-    "tomlkit>=0.10.1",
+    "tomlkit>=0.10.1,<=0.11.7",
     "colorama>=0.4.5;sys_platform=='win32'",
     "typing-extensions>=3.10.0;python_version<'3.10'",
 ]