diff --git a/.readthedocs.yml b/.readthedocs.yml
index 13ae5bed..fc2e4840 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -9,7 +9,7 @@ version: 2
 build:
   os: ubuntu-20.04
   tools:
-    python: "3.9"
+    python: "3.10"
     # You can also specify other tool versions:
     # nodejs: "16"
     # rust: "1.55"
@@ -29,5 +29,4 @@ sphinx:
 # Optionally declare the Python requirements required to build your docs
 python:
   install:
-    - method: pip
-      path: .
+    - requirements: docs/requirements.txt
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 00000000..76aa0da8
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1,8 @@
+sphinx==7.1.2
+sphinx-rtd-theme==1.3.0
+fsspec==2023.6.0
+zarr
+dask
+numpy
+scipy
+scikit-image
diff --git a/docs/source/conf.py b/docs/source/conf.py
index 854cc342..3825cd12 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -9,6 +9,7 @@
     "sphinx.ext.doctest",
     "sphinx.ext.autodoc",
     "sphinx.ext.intersphinx",
+    "sphinx_rtd_theme",
 ]
 
 # use index.rst instead of contents.rst
@@ -28,3 +29,6 @@
     "numpy": ("https://numpy.org/doc/stable/", None),
     "zarr": ("https://zarr.readthedocs.io/en/stable/", None),
 }
+
+# https://github.com/readthedocs/sphinx_rtd_theme
+html_theme = "sphinx_rtd_theme"
diff --git a/requirements/requirements-dev.txt b/requirements/requirements-dev.txt
index d5a00601..2931335e 100644
--- a/requirements/requirements-dev.txt
+++ b/requirements/requirements-dev.txt
@@ -1,3 +1,4 @@
+fsspec==2023.6.0
 black
 cython >= 0.29.16
 numpy >= 1.16.0