diff --git a/.github/workflows/ci_cd.yml b/.github/workflows/ci_cd.yml
index c6e8c43f..58c0d3e9 100644
--- a/.github/workflows/ci_cd.yml
+++ b/.github/workflows/ci_cd.yml
@@ -107,8 +107,8 @@ jobs:
       - name: "Run Ansys documentation building action"
         uses: ansys/actions/doc-build@v8
         with:
-          python-version: ${{ env.MAIN_PYTHON_VERSION }}
-          dependencies: "texlive-fonts-extra "
+          python-version: 3.13
+          dependencies: "texlive-fonts-extra"
 
   package:
     name: "Package library"
@@ -144,17 +144,17 @@ jobs:
     needs: [package]
     runs-on: ubuntu-latest
     steps:
-    - name: "Release to the public PyPI repository"
-      uses: ansys/actions/release-pypi-public@v8
-      with:
-        library-name: ${{ env.PACKAGE_NAME }}
-        twine-username: "__token__"
-        twine-token: ${{ secrets.PYPI_TOKEN }}
-
-    - name: "Release to GitHub"
-      uses: ansys/actions/release-github@v8
-      with:
-        library-name: ${{ env.PACKAGE_NAME }}
+      - name: "Release to the public PyPI repository"
+        uses: ansys/actions/release-pypi-public@v8
+        with:
+          library-name: ${{ env.PACKAGE_NAME }}
+          twine-username: "__token__"
+          twine-token: ${{ secrets.PYPI_TOKEN }}
+
+      - name: "Release to GitHub"
+        uses: ansys/actions/release-github@v8
+        with:
+          library-name: ${{ env.PACKAGE_NAME }}
 
 
   doc-deploy-stable:
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 4c5988fd..81b32d3f 100755
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -2,7 +2,6 @@
 
 from datetime import datetime
 import os
-from pathlib import Path
 import sys
 
 sys.path.insert(0, os.path.abspath("../.."))
@@ -11,7 +10,6 @@
     ansys_favicon,
     ansys_logo_white,
     ansys_logo_white_cropped,
-    get_autoapi_templates_dir_relative_path,
     get_version_match,
     latex,
     pyansys_logo_black,
@@ -59,6 +57,17 @@
             "icon": "fa fa-comment fa-fw",
         },
     ],
+    "ansys_sphinx_theme_autoapi": {
+        "project": project,
+        "ignore": ["*_visitors*"],
+        "options": [
+            "members",
+            "undoc-members",
+            "show-inheritance",
+            "show-module-summary",
+            "special-members",
+        ],
+    },
 }
 
 html_context = {
@@ -73,12 +82,12 @@
 extensions = [
     "notfound.extension",  # for the not found page.
     "numpydoc",
-    "autoapi.extension",
     "sphinx.ext.autosectionlabel",
     "sphinx.ext.coverage",
     "sphinx.ext.intersphinx",
     "sphinx_copybutton",
     "sphinx_design",
+    "ansys_sphinx_theme.extension.autoapi",
 ]
 
 # Intersphinx mapping
@@ -113,8 +122,8 @@
     "GL09",  # Deprecation warning should precede extended summary
     "GL10",  # reST directives {directives} must be followed by two colons
     "SS01",  # No summary found
-    "SS02",  # Summary does not start with a capital letter
-    "SS03",  # Summary does not end with a period
+    # "SS02",  # Summary does not start with a capital letter
+    # "SS03",  # Summary does not end with a period
     "SS04",  # Summary contains heading whitespaces
     "SS05",  # Summary must start with infinitive verb, not third person
     "RT02",  # The first line of the Returns section should contain only the
@@ -139,23 +148,11 @@
 master_doc = "index"
 
 # Configuration for Sphinx autoapi
-autoapi_type = "python"
-autoapi_dirs = ["../../src/ansys/"]
-autoapi_root = "api"
-autoapi_options = [
-    "members",
-    "undoc-members",
-    "show-inheritance",
-    "show-module-summary",
-    "special-members",
-]
-autoapi_template_dir = get_autoapi_templates_dir_relative_path(Path(__file__))
 suppress_warnings = ["autoapi.python_import_resolution"]
-autoapi_python_use_implicit_namespaces = True
-autoapi_render_in_single_page = ["class", "enum", "exception"]
-autoapi_own_page_level = "class"
-autoapi_ignore = ["*_visitors*"]
-autoapi_keep_files = True
+# autoapi_python_use_implicit_namespaces = True
+# autoapi_render_in_single_page = ["class", "enum", "exception"]
+# autoapi_own_page_level = "class"
+# autoapi_keep_files = True
 
 # Generate section labels up to four levels deep
 autosectionlabel_maxdepth = 4
@@ -214,4 +211,4 @@
 # change the preamble of latex with customized title page
 # variables are the title of pdf, watermark
 latex_elements = {"preamble": latex.generate_preamble(html_title)}
-sd_fontawesome_latex = True
+# sd_fontawesome_latex = True
diff --git a/pyproject.toml b/pyproject.toml
index c9d91e90..d2bf2892 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,15 +40,13 @@ dependencies = [
 [project.optional-dependencies]
 doc=[
     "ansys-engineeringworkflow-api==0.1.0",
-    "ansys-sphinx-theme==0.14.0",
+    "ansys-sphinx-theme[autoapi]==1.6.3",
     "numpydoc==1.6.0",
     "pyansys-tools-variableinterop==0.1.1",
     "pytest-sphinx==0.6.3",
-    "Sphinx==7.2.6",
+    "sphinx==8.2.3",
     "sphinx-copybutton==0.5.2",
-    "sphinx-design==0.6.1",
     "sphinx-copybutton==0.5.2",
-    "sphinx-autoapi==3.4.0",
     "sphinx-gallery==0.15.0",
     "sphinx-notfound-page==1.0.4",
 ]