diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 103a5ea2..f51d87e3 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -6,11 +6,7 @@ python:
       path: .
       extra_requirements:
         - dev
-    - method: pip
-      packages:
-        - sphinx==5.3.0
-        - sphinxcontrib-asyncio
-        - sphinx_rtd_theme
+        - docs
 
 build:
   os: ubuntu-24.04
diff --git a/pyproject.toml b/pyproject.toml
index a2721bf5..f3c1118e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,6 +43,11 @@ dev = [
     "pytest-asyncio",
     "Twine",
 ]
+docs = [
+    "sphinx==5.3.0",
+    "sphinxcontrib-asyncio",
+    "sphinx_rtd_theme",
+]
 
 [project.urls]
 "Homepage" = "https://juju.is/docs/sdk"
diff --git a/tox.ini b/tox.ini
index f3e80d42..1e6071c0 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,10 +21,7 @@ passenv =
 
 [testenv:docs]
 deps =
-    .[dev]
-    sphinx==5.3.0
-    sphinxcontrib-asyncio
-    sphinx_rtd_theme
+    .[dev,docs]
 
 allowlist_externals = rm
 commands =