diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index dd09666..37ce7be 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,10 +10,7 @@ build:
   os: ubuntu-20.04
   tools:
     python: "3.10"
-    # You can also specify other tool versions:
-    # nodejs: "16"
-    # rust: "1.55"
-    # golang: "1.17"
+
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:
@@ -23,10 +20,13 @@ sphinx:
 formats:
    - pdf
 
+# FIXME: We should be installing the `doc` dependency group and not the `doc`
+# extra.
+
 #Optionally declare the Python requirements required to build your docs
 python:
   install:
     - method: pip
       path: .
       extra_requirements:
-        - doc
\ No newline at end of file
+        - doc
diff --git a/pyproject.toml b/pyproject.toml
index a39af1e..382d702 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -54,3 +54,7 @@ build-backend = "uv_build"
 dev = [
     "ruff>=0.13.1",
 ]
+doc = [
+    "sphinx>=7.4.7",
+    "sphinx-rtd-theme>=3.0.2",
+]