diff --git a/pyproject.toml b/pyproject.toml
index 53608bb9..84253557 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,15 +4,15 @@ version = "3.1"
 description = ""
 authors = [{ name = "Cantera Developers", email = "developers@cantera.org" }]
 dependencies = [
-  "sphinx>=6.2.1",
+  "sphinx>=8.1.3",
   "pydata-sphinx-theme==0.15.2",
   "myst-parser>=2.0.0",
   "sphinx-design>=0.4.1",
   "sphinx-autobuild>=2021.3.14",
-  "ablog>=0.11.6",
+  "ablog>=0.11.13",
   "sphinxcontrib.mermaid",
 ]
-requires-python = ">=3.10"
+requires-python = ">=3.13"
 license = { text = "BSD-3-Clause" }
 
 [tool.pdm]
diff --git a/source/community.md b/source/community.md
index cd4afb0f..7ad51748 100644
--- a/source/community.md
+++ b/source/community.md
@@ -132,6 +132,7 @@ happy to help, if you do not know how to get started.
 News <news-index>
 Getting Involved <getting-involved>
 Citing Cantera <citations>
+Consulting Services <consulting>
 Affiliated Packages <affiliated>
 Governance <governance>
 Dave Goodwin <dave-goodwin>
diff --git a/source/consulting.md b/source/consulting.md
new file mode 100644
index 00000000..521358fd
--- /dev/null
+++ b/source/consulting.md
@@ -0,0 +1,3 @@
+# Consulting Services
+
+While the developers provide basic free support for Cantera via the Cantera Users' Group, this is may not be sufficient for all users. If you have needs beyond this for training, problem solving, or implementing new features, the lead Cantera developer (Ray Speth) offers professional consulting services. Please contact him at <a href="mailto:ray@cantera.org">ray@cantera.org</a> with any inquiries.
diff --git a/source/index.md b/source/index.md
index 53380b96..31516025 100644
--- a/source/index.md
+++ b/source/index.md
@@ -140,7 +140,7 @@ data-canonical-src="https://mybinder.org/badge_logo.svg" style="max-width:100%;"
 ::::{grid} 2
 :::{grid-item}
 :columns: 9
-The <a href="https://groups.google.com/g/cantera-users">Cantera Users’ Group</a> on Google Groups is the forum where most Cantera users have their questions asked and answered. If you need help using Cantera and cannot find an answer in the tutorials or documentation at Cantera's website, consider joining and asking a question there. Find more information in our <a href="/community.html#the-cantera-users-group">Community section</a>.
+The <a href="https://groups.google.com/g/cantera-users">Cantera Users’ Group</a> on Google Groups is the forum where most Cantera users have their questions asked and answered. If you need help using Cantera and cannot find an answer in the tutorials or documentation, consider joining and asking a question there. Find more information in our <a href="/community.html#the-cantera-users-group">Community section</a>. For greater or more individualized needs, <a href="/consulting.html">professional services</a> are also available.
 :::
 :::{grid-item}
 :columns: 3