diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 6ea4f017f..b345f7875 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -20,8 +20,4 @@ build:
       - ford fortran_docs.md 
 python:
   install:
-    - method: pip
-      path: .
-      extra_requirements:
-        - docs
     - requirements: docs/requirements.txt
diff --git a/pyproject.toml b/pyproject.toml
index 831396ab2..d1068a8bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -142,18 +142,3 @@ CMAKE_INSTALL_LIBDIR="lib"
 path = "version.txt"
 location = "source"
 template = '''${version}'''
-
-[project.optional-dependencies]
-docs = [
-    "sphinx",
-    "sphinx-autosummary-accessors",
-    "sphinx-book-theme >= 0.3.0",
-    "sphinx-copybutton",
-    "sphinx-design",
-    "sphinx-inline-tabs",
-    "sphinxext-rediraffe",
-    "sphinxext-opengraph",
-    "nbsphinx",
-    "ipython",
-    "ford",
-]