diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index 7a7360ae..3d79c575 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -19,6 +19,10 @@ build:
 sphinx:
    configuration: doc/source/conf.py
 
+python:
+  install:
+    - requirements: doc/source/requirements.txt
+
 # If using Sphinx, optionally build your docs in additional formats such as PDF
 # formats:
 #    - pdf
diff --git a/doc/source/requirements.txt b/doc/source/requirements.txt
new file mode 100644
index 00000000..cbf1e365
--- /dev/null
+++ b/doc/source/requirements.txt
@@ -0,0 +1,2 @@
+sphinx
+sphinx-rtd-theme