diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 0bb40d8..e60586f 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -10,7 +10,7 @@ build:
   jobs:
     install:
     - pip install --upgrade pip
-    - pip install --group dev
+    - pip install --group docs
 
 formats:
 - pdf
diff --git a/pyproject.toml b/pyproject.toml
index 304bbcd..30ceeb0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,13 +37,6 @@ dev = [
     "cogapp",
     "hypothesis",
     "pytest",
-    # docs
-    "beanbag-docutils>=2.0",
-    "codespell",
-    "furo",
-    "pygments-csv-lexer",
-    "sphinx-autobuild",
-    "sphinx-copybutton",
     # mypy
     "data-science-types",
     "mypy",
@@ -55,6 +48,14 @@ dev = [
     "flake8",
     "flake8-pyproject",
 ]
+docs = [
+    "beanbag-docutils>=2.0",
+    "codespell",
+    "furo",
+    "pygments-csv-lexer",
+    "sphinx-autobuild",
+    "sphinx-copybutton",
+]
 
 [project.urls]
 Homepage = "https://github.com/simonw/sqlite-utils"