diff --git a/pyproject.toml b/pyproject.toml
index b7d1a1776..a9f535537 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ tests = [
     "pytest-rerunfailures==14.0",
 ]
 doc = [
-    "Sphinx==7.4.4",
+    "Sphinx==8.0.2",
     "ansys-sphinx-theme[autoapi]==1.0.3",
     "build>= 0.10.0",
     "flit>=3.8.0",