diff --git a/.readthedocs.yml b/.readthedocs.yml
index f12acc8..1d2c166 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -10,6 +10,10 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.11"
+  jobs:
+    post_install:
+      - pip install --upgrade pdm
+      - VIRTUAL_ENV=$(dirname $(dirname $(which python))) pdm install -dG docs
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
@@ -18,8 +22,3 @@ sphinx:
 # Optionally build your docs in additional formats such as PDF
 formats:
   - pdf
-
-python:
-  install:
-    - requirements: docs/requirements.txt
-    - {path: ., method: pip}
diff --git a/docs/requirements.txt b/docs/requirements.txt
deleted file mode 100644
index c226348..0000000
--- a/docs/requirements.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-myst_parser>=3.0.1
-pydata_sphinx_theme>=0.15.4
-# Requirements file for ReadTheDocs, check .readthedocs.yml.
-# To build the module reference correctly, make sure every external package
-# under `install_requires` in `setup.cfg` is also listed here!
-sphinx>=7.3.7
-sphinx_design>=0.6.0
diff --git a/pyproject.toml b/pyproject.toml
index eba54e5..809e9fb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,16 +40,10 @@ requires-python = ">=3.10"
 
 [project.optional-dependencies]
 docs = [
-  "sphinx>=5.3.0",
-  "sphinx_copybutton==0.5.0",
-  "sphinx_toggleprompt==0.2.0",
-  "myst_nb==0.16.0",
-  "sphinx_design==0.3",
-  "pydata-sphinx-theme==0.13.3",
-  "sphinx_simplepdf",
-  "numpydoc>=1.6.0",
-  "sphinxcontrib.bibtex",
-  "nbsphinx"
+  "myst_parser>=3.0.1",
+  "pydata_sphinx_theme>=0.15.4",
+  "sphinx>=7.3.7",
+  "sphinx_design>=0.6.0"
 ]
 testing = [
     "pytest",