diff --git a/pyproject.toml b/pyproject.toml
index 89308e80..2123b16a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ tests = [
     "vtk==9.2.6",
 ]
 doc = [
-    "Sphinx==5.3.0",
+    "Sphinx==6.2.1",
     "ansys-mapdl-core==0.64.1",
     "ansys-mapdl-reader==0.52.11",
     "ansys-sphinx-theme==0.9.8",