diff --git a/.readthedocs.yml b/.readthedocs.yml
index fcd0b5c..73b2be6 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -7,5 +7,6 @@ python:
   version: '3.8'
   install:
     - path: '.'
+    - requirements: 'docs/requirements.txt'
 build:
   image: 'latest'
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 0000000..b53e869
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1,2 @@
+sphinx_rtd_theme==0.4.3
+Sphinx>2