diff --git a/.readthedocs.yml b/.readthedocs.yml
index bd27f913..0b906990 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -2,6 +2,8 @@ version: 2
 
 python:
   version: 3.6
+  install:
+    - requirements: docs/requirements.txt
 
 mkdocs:
   configuration: mkdocs.yml
diff --git a/docs/requirements.txt b/docs/requirements.txt
new file mode 100644
index 00000000..6f425d53
--- /dev/null
+++ b/docs/requirements.txt
@@ -0,0 +1 @@
+mkdocs==1.5.1