diff --git a/requirements.txt b/requirements.txt
index fbdd276ba..f162e1ab6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-mkdocs>=0.16.1
+mkdocs>=0.16.1,<0.17.0
 pymdown-extensions>=1.4
 mkdocs-bootswatch>=0.4.0