diff --git a/docs/requirements.txt b/docs/requirements.txt
index b359e3b0..577a18a9 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -1,6 +1,6 @@
 docutils>=0.14
 Sphinx>=1.7
-recommonmark==0.4.0
+recommonmark
 sphinx_rtd_theme
 sphinx_markdown_tables
 numpy