diff --git a/.github/workflows/build-docs.yml b/.github/workflows/build-docs.yml
index a0d0e06..3b805c6 100644
--- a/.github/workflows/build-docs.yml
+++ b/.github/workflows/build-docs.yml
@@ -27,6 +27,8 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install build
+          pip install "setuptools<81"
+          pip install "toml"
           pip install "jinja2<3.1"
           pip install .[dev]
       - name: Build docs
diff --git a/pyproject.toml b/pyproject.toml
index fd00c4e..3d498d7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,6 +40,7 @@ dev = [
     "pylint",
     "flit>=3.2",
     "invoke",
+    "toml",
     "Sphinx<3.6",
     "sphinx_rtd_theme",
 ]