diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index a3dc00e..3d90fb7 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -38,3 +38,4 @@ python:
    install:
    - method: pip
      path: .
+   - requirements: docs/requirements.txt
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 0000000..483a4e9
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1 @@
+sphinx_rtd_theme