diff --git a/.readthedocs.yml b/.readthedocs.yml
index f1d8270..bdd185b 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -6,3 +6,8 @@ build:
 sphinx:
   configuration: documentation/source/conf.py
   fail_on_warning: true
+
+python:
+   version: 3.7
+   install:
+      - requirements: rtd.txt
diff --git a/rtd.txt b/rtd.txt
new file mode 100644
index 0000000..9870699
--- /dev/null
+++ b/rtd.txt
@@ -0,0 +1 @@
+sphinx-autodoc-typehints >= 1.6.0, < 2.0