diff --git a/docs/readthedocs.yml b/docs/readthedocs.yml
new file mode 100644
index 000000000..893e91364
--- /dev/null
+++ b/docs/readthedocs.yml
@@ -0,0 +1,4 @@
+python:
+    version: 3.5
+    pip_install: true
+requirements_file: null