diff --git a/.readthedocs.yml b/.readthedocs.yml
index 8515058..ab1be6e 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -19,8 +19,8 @@ formats: all
 
 # Optionally set the version of Python and requirements required to build your docs
 python:
-  version: 3.7
+  version: "3.7"
   install:
     - method: setuptools
       path: .
-#    - requirements: docs/requirements.txt
+    - requirements: docs/requirements.txt
diff --git a/docs/conf.py b/docs/conf.py
index d11dcd3..00224e9 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -65,7 +65,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+html_theme = 'sphinx_rtd_theme'
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 0000000..41fe3b0
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1,2 @@
+Sphinx==4.2.0
+sphinx-rtd-theme==1.0.0