diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 96aa5a1d..b34d9413 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -40,7 +40,7 @@ jobs:
 
     - name: Install Sphinx and requirements
       run: |
-        pip install -U sphinx myst-parser breathe pydata-sphinx-theme sphinxext-rediraffe sphinx-design sphinx-copybutton linkify-it-py pygments
+        pip install -U breathe>=4.35.0 linkify-it-py>=2.0.3 myst-parser>=4.0.0 pydata-sphinx-theme>=0.15.4 sphinx>=8.0.2 sphinx-copybutton>=0.5.2 sphinx-design>=0.6.1 sphinxext-rediraffe>=0.2.7 sphinx-togglebutton>=0.3.2
 
     - name: Configure
       run: |
diff --git a/pyproject.toml b/pyproject.toml
index 0babac1a..b961080b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "two-avogadro-cc"
 version = "2.dev0"
 description = "Documentation and development website for Avogadro2"
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 dependencies = [
     "breathe>=4.35.0",
     "linkify-it-py>=2.0.3",
@@ -13,4 +13,5 @@ dependencies = [
     "sphinx-copybutton>=0.5.2",
     "sphinx-design>=0.6.1",
     "sphinxext-rediraffe>=0.2.7",
+    "sphinx-togglebutton>=0.3.2",
 ]